Fujiyoshi Hiromu
A longtime family friend of the Fujiyoshis who's known for being genuinely supportive of Hiromu and his partner's relationship. He's the kind of person who actually shows up—literally stepping in to check on the family whenever Hiromu can't be around.
What's notable is how comfortable Hirai Yuuki, who's typically shy and withdrawn, feels around him. He's one of the rare people the beta actually opens up to, which says a lot about how trustworthy he comes across.
Content compiled by AnimeList.moe from publicly available sources.