Description: It is rumored that there are several proofs of friendship between humans and monsters. What is it like? The player controls Ryuto, who searches deep inside the dungeon to find proof of friendship. Various gimmicks are set in the dungeon, making it difficult to reach inside. A wide variety of gimmicks block intruders, such as high steps out of reach, narrow airborne scaffolding, strong waterways, dark rooms with no light, and things like that. There will be gimmicks that cannot be overcome by Ryuto alone. Monster girls have their own unique characteristics. A slime girl has a viscous body, a harpy can fly with her winged arms, and a centaur can run as fast as a horse. If you have a trampoline-shaped slime girl jump up, you can go over a high step, and if you have a harpy that can fly in the sky, it does not matter if you have a huge hole where the bottom cannot be seen.