Finished the game and unlocked gallery.
This game is pretty good...
Art/hentai direction wise...
Each H-scene has short 3-6 panels and there are variants if you loss twice or thrice to them.
True ending is unlocked if you find the key in a chest after getting swallowed by tentacle trap.
If you don't have the key, you get the generic bad trial ending, but you don't get to walk like a doggie with preggo anymore.
[Tip: Get the hearts such as green one in chests. It generates souls which lets you dodge/guarantee's hit.]
I managed to collect like 3000 souls which allowed me to just afk kill the last-boss while holding the final key.
[Focus on STR] <-- the only viable stat in the game to deal dmg LOL.
Anyways this game is pretty much an manga colored style h-game of kanade rogue. which is pretty unique.