This is your senpai Taro and your Ayano Aishi, your his friend already, try to kill everyone who has a crush on him, Osana is his best friend so when you kill her cheer him up,

The people who have a crush on him : (Osana Najimi, Amai Odayaka, Kizana Sunobu, Oka Ruto, Azu Rito, Muja Kina (She is a nurse), Mida Rana (is a teacher), Osoro Shidesu, Hanako Yamada (is his sister!?!?), Megami Saiko (student council)