2 Bugs.
1 - In Castille Underground 1 Map 140 when you get the Dungeon Key I as there isn't a way to get back.
2 - Late game you have the option to rename "Guy" from the Tuterminal in Forest Dungeon South Map 15. The plugin CharacterBanner.js doesn't take into account that "Guy" can be another name which causes the battles to error out looking for an actor picture that doesn't exist.
I would say the final boss enemies have way too much hp. Even cheesing it still takes awhile to get down from over a million. Shame not much was done with the lewdness in game as the girls are cute.