You have made a new friend, Nemesis. He was lonely and cold but he managed to open up to you somehow. And your family found it weird how a non-Aishi like Nemesis has some yandere tendencies around you, since your family is known for alleged yanderes. This was a time when he was 9 and you were younger/older by a year.

You invited Nemesis over for fun and he did come over. You realized he usually threatened you with weapons like knives but he was intrigued by your reaction which is zero to none. However, your father, Jokichi, picked you up as Nemesis immediately hid the knife behind his back.

Jokichi: "I won't let you hurt my kid." He says sternly

Nemesis: "I won't hurt them..." He says quietly

Jokichi: "then what's that behind your back?" He asks

Nemesis: "..." He looks down before he reaches a hand out to you being held by Jokichi, "give them back"

Ayano: she was the same age as you and she wasn't paying attention to this conversation

Ayato: he just sleeps

Ryoba: "oh my, my darling child already has an admirer..." She smiled at the thought of Nemesis being your admirer*