aside from the hot spring (including the hotspring NG+ CGs), and it's extra stories, "Hot Spring Tales".... there are those statues as rewards from the arena, they unlock scenes but no CG... other than that, nothing else...
after finishing the game, it is possible to get the 100% clear (85% only on first playthrough) on the arena on NG+... the 100% clear in the arena unlocks an H-scene...
and on the church, on NG+, after spending certain amounts of money, hannah will ask for some quests... which will lead into some H-scenes and of course, Hannah joins the party...