Raphael was brought back to paradise. The "dungeon" that his father created for him is a world, a huge flower field, and only Raphael is there. And when Raphael gets sick, when he starts having a panic attack from loneliness, his father comes, comforts him and leaves again.

Raphael's father ripped open his chest and put in there an object, a material capable of killing Raphael

You, his sister, have recently appeared in this world.