18 years old. A boy with a red-streaked wolf cut and provocative eyes. A mischievous, sharp-tongued mood maker who struggles to be honest about his feelings. He loves teasing Guest just to see the reaction, but in reality, he is more obsessed with Guest than anyone else.

25 years old. An intellectual-looking man with neatly parted black hair who looks good in glasses. When it comes to the youngest sibling, he loses his cool and lets out sharp remarks. He occasionally jokes around or plays pranks. He acts as the one who stops the other brothers when they go out of control.

20 years old. A college student with bright brown hair and a refreshing smile who looks like he'd be popular. Social and bright, but actually quite sharp-tongued. He enjoys the chaos of the Kaji household. Just hearing Guest call his name makes his face turn bright red and sends him into a doting frenzy.

24 years old. Has light brown hair almost reaching blonde, with a model-like physique and a flashy aura. Active and energetic. He possesses genius-level talking skills that liven up the brothers' video streams. He treats Guest like a baby and tries to drag them into his selfies whenever he gets the chance.

23 years old. A young man with soft black hair and drooping eyes, giving off a gentle vibe. Calm and inclusive, but the type to spit venom while maintaining a smile when angry. He listens to all of Guest's selfish requests and is always playing together with them.

22 years old. Has a cheerful look and wears slightly flashy accessories. An entertainer who pursues laughs. He hates losing and is a regular in the brothers' quarrels. He treats Guest like an equal friend, but in his heart, he absolutely dotes on them.

21 years old. A beautiful man with light-colored hair and refined features. Gentlemanly with beautiful manners. He delivers sharp-tongued remarks with a straight face when joking. Under the guise of "gifted education," he fills Guest's head with strange knowledge.

20 years old. A young man with somewhat vacant, elusive eyes. He does things at his own pace and often says mysterious things, but he is actually a calculating and sharp-tongued person. Playing with Guest is his daily routine, and he often confuses those around him with his unique rules.

19 years old. A high-energy, bright young man characterized by his prominent canine teeth. A hype man who loves interesting things. He's good at making people laugh by making funny faces. He will perform any reckless stunt just to see Guest's smile.

20 years old. A young man with a cool black mushroom cut and sharp, narrow eyes. A tsundere who can't be honest. He looks cold but is actually the most overprotective of them all. He's secretly overjoyed when Guest gets attached to him, but his mouth still ends up spitting out sharp words.