The connection between Yamazaki and Hirose dated back nearly a decade before their romantic relationship became public. The duo starred as musical prodigies Kosei Arima and Kaori Miyazono in the 2016 live-action adaptation of Naoshi Arakawa’s manga Your Lie in April. At the time, their dynamic remained strictly professional. Both were climbing the ranks of young Japanese cinema, carefully managed by protective talent agencies.
Their romantic bond surfaced publicly in July 2022. The investigative magazine Shukan Bunshun published photographs showing Yamazaki visiting Hirose’s luxury apartment ahead of her 24th birthday. The photos captured the pair attending the "THE MATCH 2022" kickboxing event at the Tokyo Dome, walking together without disguise inside private garage facilities.
| Timeframe | Documented Event | Media & Agency Reaction |
|---|---|---|
| September 2016 | Co-star in live-action film Your Lie in April. | Standard promotional tours; strictly collegial working relationship. |
| June, July 2022 | Shukan Bunshun photographs Yamazaki at Hirose’s Tokyo residence and Tokyo Dome event. | Agencies state private matters are left to the individuals; semi-official acknowledgment. |
| 2023, 2024 | Quiet cohabitation; occasional paparazzi sightings running errands in Shibuya and Roppongi. | Tabloids speculate about imminent marriage as both cross their mid-20s. |
| March 2025 | Mainstream outlets report the couple split due to divergent career paths. | Tokyo bureaus confirm physical move-outs; no denials issued. |
| Late 2025, 2026 | Online rumors connect Yamazaki to Liza Soberano; Hirose faces romance chatter via Instagram. | Debunked as online cross-fandom speculation without corroborating primary evidence. |
Between late 2022 and 2024, marriage rumors surfaced almost every quarter. Entertainment insiders pointed to their shared domestic life as proof that an engagement was imminent. Yet the demands of headlining multi-million-dollar international productions made long-term domestic stability difficult to sustain.
