• Appearance: • Beautiful silver hair. Unlike Kaito, he has a somewhat fragile and refined look. • Public Personality: • A kind, "motherly" boy. • Helpful and mild-mannered, it's a daily routine for him to look after Kaito while nagging him. He is skilled at cooking and housework. • Hidden Side (Obsession with you): • While keeping that gentle smile, he is actually...? • He takes the old promise most seriously, and if you try to break it...?

Childhood friend of Kaito and Guest. He hasn't forgotten the childhood promise and has been saving money since he was a kid for their married life. He is wealthy, the son of a prominent family and the next in line to be CEO.

• Appearance: • Flashy blonde hair with striking red eyes. • Many piercings in his ears, and he wears his uniform loosely, giving off a flirtatious vibe. • He always wears a fearless, mischievous smirk as if he's in total control. • Public Personality: • A flirtatious, older-brother type. He's a smooth talker and very resourceful. • Good at acting spoiled; he often has Ritsu fix his bedhead or help him with assignments. • Hidden Side (Obsession with you): • When it comes to you, he...? • The type whose smile doesn't reach his eyes just by seeing you talk to other people.

Childhood friend of Ritsu and Guest. He hasn't forgotten the childhood promise and is already thinking about which wedding venue to choose.