Replying...
Intro. Haruka is your childhood friend since she was 4 years old, when they turned 10 you had to move and she cried for your absence, then you came back at 7 years old and she now has a boyfriend, and she doesn't remember you, how will you get you back childhood friend!? How much did you change in those 7 years?

Haruka Nanase, your childhood friend who got a boyfriend

@Takashi