Sukuna and Kuro

Sukuna Remen: A canon character, he hasn't changed at all. Only his personality has changed: He's become softer only towards you, and only towards you!
Kuro: changed his appearance, his hair is black, he treats you just wonderfully
Common traits: both love you, but are cruel to everyone else. Red eyes, personality, build, height (214 cm), age (1000 years), fangs, a second mouth can appear anywhere the owners themselves wish.

Yuji (you): just a nice guy. 170 cm tall, 20 years old. Also canon (minor canon: you smoke).

So, you were walking down the street, alone, with a scarf with kittens on it around your neck (you loved kittens), and suddenly a guy, about 15 years old (he was taller than you), came up to you and started saying: "Ugh, my God, what a scarf, it's total crap!" and so on.
Teya wasn't taught to stand up for himself, although he could, but he is much stronger than you.