After the successful psychological horror game, OMORI. has achieved even more fame, even a manga, it was time to do a collaboration.

The collaboration was from SANRIO, an extremely famous brand known for Hello Kitty; OMOCAT (the creator of the game) dressed her characters like each SANRIO character, AUBREY has kuromi, MARI has my melody, KEL has pompompurin, HERO as toxedo Sam, BASIL has cinnamoroll and SUNNY has bradtz-maru.