Kento Yamazaki × Suzu Hirose BaZi Compatibility: Both Bing-Ding Fire, No Water in Either Chart — Why Did They Break Up After Two Years?

Kento Yamazaki and Suzu Hirose are both top-tier stars in the Japanese entertainment industry. One is a fiery male lead who ignites the screen, the other a clear, transparent actress hailed by the media as the 'National Girlfriend.' Not only do their on-screen auras match, but in BaZi terms, they are both Fire Day Masters — Bing Fire like the midday sun, Ding Fire like a candle flame at night — a rare 'Peer-Rival same-frequency' combination. It's easy to understand why sparks flew when they dated, but the structure of their combined charts, which lacks a single drop of Water, had already laid the groundwork for their eventual breakup.

Kento Yamazaki (born 1994) debuted as a lead in idol dramas and secured his top-tier status through hit works like Ace of Diamond, The Seven Deadly Sins, and the live-action Laid-Back Camp. He is one of the few male actors in recent years who simultaneously exudes youthful charm and mature presence. Suzu Hirose (born 1998) is the younger sister of actress Alice Hirose. She burst onto the scene with Hirokazu Kore-eda's Our Little Sister, and films like The World of Kanako and Ghost in the Shell established her acting credentials beyond box office success. She is regarded as a representative actress of the late Heisei era.

In 2022, Weekly Bunshun published photos of the two together, confirming their relationship. The news was met with a general consensus in the Japanese entertainment world: 'This couple is too perfect' — in terms of appearance, aura, and age gap (about four years). Yet in less than two years, news of their breakup emerged in the fall of 2024. Entertainment media expressed regret but couldn't pinpoint the reason. The BaZi answer is straightforward: this couple was a 'scorching combustion type' from the start, not a long-distance structure.

First, Look at Their Individual Charts

Neither has disclosed their birth time, so the analysis below uses only the Year, Month, and Day Pillars. The Hour Pillar is marked with '—'.

Kento Yamazaki (Male, born 1994-09-07)

Suzu Hirose (Female, born 1998-06-19)

Key features of Yamazaki's three pillars: Jia Wood generates Bing Fire. The day branch Shen-Shen double Metal is the location of the wife star. The month stem Ren Water is a Warlord (七殺, a star that strongly restrains the Day Master and carries competitive pressure), which is particularly prominent. Hirose's pattern features Maverick (傷官, a star I generate, representing outward talent and sharpness) appearing twice on the Heavenly Stems. The year and month branches Yin and Wu are both Fire and Wood, making the overall Fire energy extremely strong — a rare full-strength destiny.

Day Master Relationship: Bing-Ding Same Fire, Peer-Rival Pattern

Bing and Ding both belong to Fire, sharing the same Five Element — this is what BaZi calls 'Peer-Rival' (比劫, a collective term for Peer and Rival, referring to stars with the same Five Element as the Day Master).

Bing Fire is Yang Fire, symbolized by the sun: always radiating outward, illuminating the earth, giving warmth and direction, naturally charismatic. Ding Fire is Yin Fire, symbolized by candlelight or lamplight: directional illumination, soft and focused, not necessarily low in temperature but not scorching, better at restraint and persistence.

When two Fire Day Masters meet, the most direct feeling is 'no translation needed when talking' — same-frequency enthusiasm, same intuitive reactions to things, same ease of igniting excitement. The advantage of a Peer-Rival pairing is extremely close magnetic fields, but the disadvantage lies precisely here: a lack of Five Element complementarity. Bing Fire's weakness needs Water to moisten, and Ding Fire's sense of stability also comes from Water (husband star). But both are Fire; neither can supplement the other's most lacking element.

Spouse Stars: Wife Star in Palace, Husband Star Lodged in Other's Chart

Yamazaki's Wife Star: Bing Fire Day Master takes Metal as the wife star (財星, the element the Day Master controls). The day branch Shen, whose main hidden stem is Geng Metal — a Venturer (偏財) — the wife star sits directly in the spouse palace (日支, the branch representing the spouse's position in BaZi). This structure indicates that Yamazaki's romantic fate is clearly positioned, with an instinctive perception of his partner.

Hirose's Husband Star: Ding Fire Day Master takes Water as the husband star (正官, the element that restrains the Day Master, representing the husband star for a female). Searching through Hirose's three pillars, the Heavenly Stems have two Wu Earth, and the Earthly Branches are Yin, Wu, You — the Water element is almost nonexistent. The husband star is nearly invisible in her natal chart.

But there is a rare structure worth examining: Yamazaki's month pillar is Ren Shen. Ren Water is precisely Ding Fire's Executive (正官), i.e., Hirose's husband star! In other words, Hirose can feel the aura of the husband star in Yamazaki — that sense of 'this person makes me feel cared for and want to rely on him' is a real BaZi chemical reaction, not an illusion.

However, there is a hidden concern: this Ren Water, in Yamazaki's own chart, is a Warlord — for Bing Fire, it represents a restraining star with oppressive pressure. Yamazaki must expend effort to deal with it. The 'husband star aura' that Hirose feels is, for Yamazaki himself, a manifestation of tension and pressure. This misalignment could become a hidden source of wear and tear as the relationship deepens.

Spouse Palace Half-Combination Metal Bureau: Shen-You Adjacent

This is the most core structure of the entire compatibility chart, bar none.

Yamazaki's day branch is Shen, and Hirose's day branch is You. In BaZi, the day branch is directly called the 'spouse palace,' directly indicating one's marriage position.

Shen (Yamazaki's spouse palace) + You (Hirose's spouse palace) = Shen and You are adjacent, tending toward a half-combination Metal Bureau. The core meaning of the Metal Bureau is precisely Bing Fire's wife star, the convergence direction of the entire Metal system. The two individuals' respective spouse palaces 'point in the same direction' in BaZi terms, forming a resonant attraction structure.

In plain language: their respective 'other half sensors' are tuned to the same frequency. The intuition of 'this is the one' upon meeting has a BaZi basis, not just a coincidental collision of appearance and circumstance. The Metal combined by the Shen-You half-combination is precisely the wife star energy that Yamazaki needs to feel — Hirose's existence makes Yamazaki's wife star 'emerge.'

Yin-Wu-Xu Triple Fire Combination: Together, Fire Energy Doubles

Hirose's year branch Yin, month branch Wu, and Yamazaki's year branch Xu — these three branches together form the most standard Yin-Wu-Xu Triple Fire Combination in BaZi.

The significance of the Triple Fire Combination is that the Five Element energies each person carries ignite each other upon meeting, doubling the power of Fire. Both are already Fire Day Masters, and the Yin-Wu-Xu triple combination adds fuel to the fire, making the overall Fire intensity far exceed ordinary pairings.

The result of strong Fire: extremely passionate interaction, endless topics, mutual stimulation of action and creative inspiration, and time spent together always full of energy and ideas. This also explains why the public's immediate reaction to this couple was 'such a good match' — because the combined aura of the two is indeed exceptionally strong and vivid.

But the Triple Fire Combination comes at a cost: maintaining a high-temperature state for a long time can be exhausting. The emotional consumption rate is also much faster than ordinary pairings.

Friction Point: Double Fire, No Water — Fast Burn, Fast Extinguish

Expanding all three pillars: the two have a total of six Heavenly Stems (Jia, Ren, Bing; Wu, Wu, Ding) and six Earthly Branches (Xu, Shen, Shen; Yin, Wu, You) — the Water element is almost zero.

Yamazaki only has the month stem Ren Water, and this Ren Water is a Warlord — a pressure star that requires willpower to handle, not a nourishing, moisturizing Water. Hirose's entire three pillars have no Heavenly Stem or Earthly Branch belonging to Water.

In this compatibility chart, Water represents two key things:

First, the source of Hirose's husband star. The husband star is not strong; emotionally, Hirose needs to actively seek the feeling of 'being cared for and stabilized.' Yamazaki's Ren Water Warlord carries both the husband star aura and pressure tension — a special existence that is both dependent and tense.

Second, the emotional buffer of the compatibility chart. Fire meeting Fire needs Water to regulate temperature and provide a cooling buffer space. Neither of them has this buffer. Once disagreements arise or cracks appear in the relationship, it's fire on fire, and neither can actively cool things down.

The fundamental difficulty of the Peer-Rival same-frequency lies here: two Day Masters of the same Five Element have high tacit understanding, but their complementarity is fundamentally insufficient — Bing Fire cannot supplement the Water that Ding Fire needs, and Ding Fire cannot fill the Water that Bing Fire lacks. What emotional long-distance relationships need most are precisely those who are different from oneself, who can pour a glass of water when the other catches fire.

Overall Rating: Medium (Scorching but Hard to Last)

Rated 'Medium' for the following reasons.

Positive structures: Day branch Shen-You half-combination (spouse palaces resonate at the same frequency), Ren Water carries the husband star root (Hirose feels a real husband star sensation in Yamazaki), Yin-Wu-Xu Triple Fire Combination (the couple's aura doubles together), Bing-Ding same type (extremely high daily tacit understanding and intuitive comprehension).

Negative structures: Peer-Rival lacks complementarity (neither can fill the other's core weakness), double chart lacks Water (lack of emotional nourishment and buffer mechanism), Ren Water Warlord (brings fate aura but also hidden tension).

The scorching period is very scorching, so the outside world sees them as a match made in heaven. But from the perspective of the three-pillar structure, the dual-fire system fundamentally lacks the Water energy needed to 'settle down' emotionally. Consumption outweighs nourishment, burning faster than accumulation. Breaking up after about two years is the natural direction of this destiny pattern — it's no one's fault, it's the logic of the Five Elements.

Time Pillar Deduction (Purely Speculative)

⚠️ The following is purely a BaZi deduction. Neither person's birth time has been confirmed by themselves or any credible source. It is for structural reference only, does not represent fact, and is not intended for any life prediction purposes.

If Yamazaki's birth time falls in the Zi hour (23:00–01:00), his hour pillar might include Ren-Zi or Gui-Hai, greatly increasing Water energy. The Warlord could be resolved, improving the structural durability of the relationship. At the same time, Hirose's husband star sensation toward him might become stronger, making it harder for them to cut ties even after separation.

If Hirose's birth time falls in the Hai hour (21:00–23:00), Hai contains Ren Water, supplementing the almost absent husband star original energy in her three pillars. The overall emotional structure of her chart would be more complete, potentially extending the effective relationship period.

If both were to have Water-supplementing hour pillars, the overall pattern would shift toward 'medium-high,' but the core dual-fire lack-of-supplement structure would remain — the fundamental consumption pattern would not be completely reversed by the hour pillar, only burning a little slower.

Further Reading

Other BaZi compatibility analyses of Japanese and Asian entertainment celebrities:

• Yui Aragaki × Hoshino Gen BaZi Compatibility — The most 'proper' Executive-Mentor pairing. Why did they stay low-key for a decade before going public?
• Takuya Kimura × Shizuka Kudo BaZi Compatibility — A legendary marriage of thirty years. How stable is the power of a BaZi day branch combination?
• Tori Matsuzaka × Erika Toda BaZi Compatibility — Debuted at the same time, secretly dated for years. How did BaZi lock them together?
• Hyun Bin × Son Ye-jin BaZi Compatibility — Both on and off screen, it came true. What is the structure of Executive and Venturer both appearing?