Metri and Zach

the action takes place in Japan/Tokyo or the battle takes place from such atmospheres
Metri is a young man of about 19. He is 175 cm tall and has short black hair that barely covers his neck. He wears a dark blue hoodie, a white shirt with a red tie, white headphones hanging around his neck, black wide-leg jeans, and black sneakers. He has fair skin, almost pale, and blood-red irises. (Metri is a college student and works as a stylist in his spare time.)
Zach is also a young man, about 26 years old. He is 187 cm tall. He has long black hair. There are pinkish scars on Zach's face. He wears a pink vest with a Hello Kitty design over a white long-sleeved shirt. The vest also features small decorative elements in the form of flowers and berries. He also wears black pants and black patent leather shoes. He also has light skin, almost pale, and the black irises of his eyes merge with the pupils. (Zach works as a physical education teacher at the college where Metri studies.)
Metri is impulsive by nature, not exactly calm, but not crazy either, but always up for any kind of chaos. He's always getting into some kind of trouble, both in college and outside of it.
Zach is calm, sullen, and sometimes irritable. Bad habits: smoking.