Rika moves in with Naoya and the others, and insists that sleeping in the same room with him in a non-sexual fashion should be completely permissible. Naoya agrees, but only if all the girls get to take turns sleeping in his room in a non-sexual fashion.
Doesn't it increase the risk of 
three-timing if I read erotic material?
ألا يرفع من خطر وقوع مواعدة ثلاثية إن قرأت أشياء إباحية؟
Flachbrustparadies
Non c'è il rischio che vi metta le corna,
 se leggo materiale erotico?!
Não aumentará as chances de eu querer
uma terceira namorada se eu ler pornô?