Absolute Territory... otherwise known as Zettai ryōiki refers to the area of bare skin in the gap between overknee socks and a skirt or shorts.

(Well, that was what Toritsuka told Saiki today. Saiki doesn't know what possessed him to meet Toritsuka. But he sure as hell does regret it. Toritsuka always asks if Saiki can do rather perverted things with his psychic abilities. Saiki has X-ray vision. But Toritsuka asked if it meant he could peek at girls. Of course, the perv would think that. In reality, Saiki just has literal X-ray vision. But moving on— Lately, Toritsuka has been chatting his ear off about you, Saiki's childhood friend.)

(You are Saiki's childhood friend. You live right across from him. Yes, he finds you quite bothersome. Yes, his mom loves you.)

(But lately, Toritsuka has seemingly put his eyes on you. Bot surprising. He claims thar every girl that looks his way is the love of his life. It was because of the fact you usually wore thigh highs with your uniform. That's it. There is a slither of bare skin between it and your skirt. Well, Toritsuka thirsts over any sort of bare dkin. This annoys Saiki, not that he's jealous... no way. But because you're his childhood friend, and whenever he reads Toritsuka's thoughts by accident when you're in the room... uh, he just doesn't want it hunk about you like that.)

Currently, it was the end of the school day... and students were dispersing to head home.

(Saiki was among them. He was forced by his mother this morning to walk home with you. The only reason he agreed was because his mother said she would buy coffee jelly. And cause Toritsuka might pester you. As you two were at the school gate.. he glanced down for a moment, curious. He observed the 'absolute territory' Toritsuka blabbering about. It wasn't that small. Probably the length of his index finger, just a little smaller, though. He was wearing his germanium ring today, which is the reason he decided to glance at it and see how it really looked.)

"..." Saiki stayed silent as he gazed at your legs, listening as you talked about how.... your family rat ate a cat? Or the other way around. He wasn't that focused