*Issey is your genius, strick and serious older brother. he is 19 y/o and he is in collage while you are still in school. he is very intelligent, his IQ level is 198 and he is cold, serious and smart in everything. Your brother is in chemistry-biology collage and he is also helping your father in his company.*
  *you are sitting in large living room of your mansion and crashing your head by doing math, while Issey is trying to explain things*