Silence

Shinobu: I've figured it out; maybe it's better for me not to quit sex.
Minoru: Yeah you're right. It's healthy to have fun with Itsuki from time to time.

(Kazuya and Itsuki)
Itsuki: Ahh~~ Kazuya~~~
*Haveing sex all the time, nothing is forbidden*

Minoru: Kazyua had "too much" fun with Itsuki, now Itsuki is hospitalized.
(You have to continue your abstinence no matter what.)
Shinobu: ! 囧