End of Walkthrough.
The narrative centers on Sakuri's desperate attempt to escape a labyrinthine underworld. The Setup:
: The final boss requires you to use the environment against it. Lure it under the hanging cages and pull the lever on the far right to crush it. Important Content Warning
: Faces Gluttony (Beelzebub) in a stage filled with biological horrors.
: There are no traditional healing items. Your health regenerates slowly over time, so if you take damage, find a safe spot to wait before progressing.
The final stages involve a confrontation with Lucifer. Unlike a traditional boss fight, this is an endurance trial where Sakuri must lure the entity into traps or reach specific exits while being relentlessly pursued. The "True Ending" is only achieved by finding hidden items throughout the previous levels, highlighting the game's emphasis on thorough (and dangerous) exploration.
The final area is a culmination of everything you have learned.