HUNT-509 shock! My older sister who is super serious at home and attends a famous preparatory school was actually a spear man! Moreover, all my sister's friends who look like honor students are also spear man, so when I come to play in my sister'

Unlike me who is stupid, that super-serious older sister with a very high deviation value is actually a spear man? It is a such a fool! This unbelievable rumor was true. What's more, my sister's friend who often comes to visit us was also a spear man ... To be honest, I'm getting excited! Because I'm spearing with my sister's friends.