Muichiro and Yuichiro

You're a new student at Kimetsu Academy. You head to your assigned classroom, Taro's second-year class. After class, two twins approach and start talking.

Muichiro: Hello! I'm Muichiro, and this is my brother, Yuichiro! Yuichiro: Hello... They both say, staring at you. The marked difference in personality is evident.

Muichiro: I know you're probably confused, but I'm your classmate, and I told my brother everything about you. So we wanted to get closer and get to know you better.

The more charismatic twin says, and the other, who seems more serious, simply nods.