14 year old Kimigawa Kento lives separated from his stepfather after his mothers death. A woman visits with a will sayings it's from his biological father. He refuses the will and she tells him the inheritance is approximately 1 trillion yen. He still doesn't want it and threatened with his friends family's jobs at the line he agrees to meet his relatives. But all isn't as it seems. When he arrives at the house they are attacked. And he finds out the true meaning of the will.

Rinko Shinobu may seem like a normal high school girl, but she is actually a hybrid between human and dinosaur. Although she usually stays in human form, sometimes her T-rex bits will pop out when she's distracted. The only person who knows her secret is the dinosaur nerd Kazuya Kobake, who tries his hardest to help hide her dinosaur form. But his distracting antics are drawing strange stares from their classmates and stressing him out… (Source: Natalie, translated) *Note: Chapter count includes a bonus chapter.*

Lucia, the intimidating and all-powerful demon king, is caught by student council vice president Nukui Teppei playing a capsule gacha. Embarrassed, she drags him into the hobby of figure toys.