I love how mature and cute is Misumi. He does his job professionally, but he blushes and embarrass with intimate things. Although I love Sei-san too, I want his serious face broken already (even if nobody see it, I mean... I'd see it). (▰˘◡˘▰)
And there is when he fall.
Maybe he doesn't know now, but he will jajaja
http://www.mangago.zone/read-manga/yoidore_koi_o_sezu/uu/9366b9fb4195266e5107ee650856f3e4_chapter-2/pg-35/
Diesel the best friend of the history or what.