its actually the bare minimum but hearing kotaro asks "did u cum asako" is lovely because most men dont even care when they got their release. its very kotaro to ask that, and the way asako said "idk but it feels good" ITS SOO00 REAL i think most girls (heck me personally) dont know much abt 'cumming' bc how we reach orgasm is different than boys. though in the hentai and in smutty mangas and in porn we see so many squirting actions thats mostly just bullshit lol never expect less from sensei to keeping it real!
wait i feel like ive read this already
You did, its chapter 5 and 5,5 from volume 1