All connected stories, super cute
1+3: Student/Teacher, but not a very large age gap. Insecurities about not being good enough/a girl. Veteran playboy student and a shy young teacher
2+4: I accidentally slept with a guy when I was drunk and he still wanted to be friends and I think I'm falling for him?
5+7: Side story of Shiba's younger brother and his best friend (who he loves, but is scared of sex)
6: Random side couple, oneshot about jealousy
Tsuyogari