Best friend, good friend, ordinary friend.

3, two small conjectures, childhood friends, passers-by, guests, distant him ~ who are you! ~

4.[[[ Brother]], [[[Old classmate]]], [[[University classmate]]], [[[Gamer]]], [[[Unknown]]]

5, girlfriends' girlfriends Bobo ~ male confidante is awesome ~ male god Oba Shuai Shuai ~ beauty school sister is beautiful ~ funnier than classmates ~ my only one ~

6, the air that can't be touched ~ the memory that can't be erased in his heart ~ the warm smile ~ the unforgettable words ~