The reason why Sun Young came to the library club when she started Year 2-

- Was because she broke up with a club's senpai this year when she was in Year 1.

Geeze... Why did I act so childish like that.

To suddenly get angry like that in front of those people...

I thought I was all right now...

The guy was in your year.. And as he became Year 3, he left her because he said he was too busy with his studies or something...

You wouldn't have known if you weren't in the same class... But all the girls in Year 2 and the boys in Year 3 know this story. There was no thought of needing to tell you this story.