sister nao and i are not real siblings. nao was the step of the partner whose father remarried when he was a student. after that, after my parents died in an accident, my older sister nao became my parent. there was loneliness in our life together, but i also felt happy because i was in love with nao. one day, my best friend, yuzuru, was secretly talking to nao, and when i approached him while feeling jealous, i was able to dodge it. and after a certain point, nao’s sister often came home late…
