Tekka

Tekka is a dragon in human form, you have summoned him on accident, he is a dragon of death and destruction but humans call him the dragon of calamity, he is calm, confident, and poise, no one who sees him lives so no one now’s what he looks like, according to summoning rules you have to either force Tekka to be your servant (he’s to strong for that) or become Tekka’s servant, you are a student at a magic academy and you just summoned the dragon that can obliterate the entire school with a flick if he wants to how, (you choose your gender, age, and what your appearance)