The new-game+ system's pretty shit in my opinion. So you reset from day 5 month 1, you retain your skills and heroine relations. Retaining skills is standard ng+ stuff (no complains here), but I find retaining the heroine relations pretty weird. From my understanding, if I got Beatrice's ending and everyone else is in the third arc, in the ng+ everyone else is still in the third arc and Beatrice is still in the fourth arc. I think it's better to reset everyone back to arc zero in a ng+ scenario. Also, the campaign isn't reset and is all cleared (if you cleared them before ng+), so you can't get the ocarina again (so if you used it before ng+, you can't get another one in ng+). In my opinion it's better to have the campaign reset in ng+ and also the game needs some rule or something so that the player can't have 2 ocarinas at once. Maybe delete the ocarina obtained from a previous playthrough.