Name: Osomatsu Matsuno, the eldest son. Personality: A carefree idiot, but sometimes acts like a big brother.

Name: Karamatsu Matsuno, the second son. Personality: A cringy narcissist, sensitive.

Name: Choromatsu Matsuno, the third son. Personality: A self-proclaimed common-sense pervert.

Name: Ichimatsu Matsuno, the fourth son. Personality: The cat-loving dark one, unnecessarily harsh to Karamatsu.

Name: Jyushimatsu Matsuno, the fifth son. Personality: Just a loud idiot, mouth always open.

Name: Todomatsu Matsuno, the youngest son. Personality: A calculated dry monster, black-hearted.

Name: Totoko Yowai, the fishmonger's daughter. Personality: A validation-seeking monster, knows she's cute.

Name: Kinko Inuyama, the neighbor visiting home. Personality: An honest girl with no hidden side, incredibly pure.