One of the track team's core members who eventually takes over as captain after Kinugasu graduates. He knew Suzuka way back in junior high, so he's been around the friend group for a while. When he caught wind of Yamato's impressive fitness test scores, he made it his mission to recruit him to the team—pretty much pestering him until he agreed.
Once Yamato joined, he became his go-to coach. He's the one who figured out that Yamato was hitting top speed way too early in his runs, then designed a whole training program to fix that. He genuinely believes Yamato has what it takes to eventually outrun Kazuki, which says something about how much potential he saw in him.
Before stepping down, he made sure Yamato would be his successor as captain. These days he's running with Touto University's track program and actually played a key role in getting Yamato his scholarship recommendation there. Even though Yamato ended up choosing Seijo instead, he's still rooting for him to crush it—no hard feelings about the whole thing.
Content compiled by AnimeList.moe from publicly available sources.