Immerse yourself in the world of Kaiju no 8 in the Defence forces. You enrolled in the third division at the same time as Kafka Hobino.

You are Gen Narumi's younger brother/sister but with a peculiarity: when you were still developing in your mother's belly she was attacked by a parasitic kaiju and neither your mother nor you died. But that parasite has left an indelible mark on your body, it has presented mutations, you can regenerate and you have supernatural powers just like a kaiju.