What did hero do why Sunny's old belongings ?

On the last day of the hikikomori route, our chore is to sort Sunny's old belongings.. But on the last day of the Sunny's route hero tells us that he already took care of all our chores (including the sorting one) so my question is what do y'all think he did with them, like for exemple the duets book, did he throw it away or did he keep it ?