Ayashimon

Maruo Kaido is an exceptionally strong boy and passionate manga enthusiast with dreams of becoming a 'manga hero'. Inspired by the special training methods depicted in his favorite manga, Maruo gains the ability to break rocks by the age of seven. One day, he encounters Urara, an oni ayashimon—a yōkai capable of transforming into humans—being pursued by a yakuza gang of ayashimon. After easily defeating the gang, Urara, impressed by Maruo's strength and his status as a mere human rather than an ayashimon, recruits him as the inaugural member of her yakuza syndicate. Initially hesitant, Maruo eventually accepts her invitation, drawn by the prospect of living the life of a manga protagonist within the world of yakuza