What made Sekiguchi embarrassed when she was asked about cram school?


In episode 6, there is a scene where Daiku, a former team member of Igo
soccer, is getting bored with their inactivity in their club room. The
conversation follows like this (read from left to right):

[![Daiku: And you'reno fun,
Sekiguchi](https://i.stack.imgur.com/uxhMlm.jpg)](https://i.stack.imgur.com/7KqHX.png)
[![Daiku: Don't you go to cram school,
Sekiguchi?](https://i.stack.imgur.com/7KqHXm.png)](https://i.stack.imgur.com/QQCDz.png)
[![... Sekiguchi with embarassed f
ace](https://i.stack.imgur.com/QQCDzm.png)](https://i.stack.imgur.com/A89BZ.png)
[![Daiku: You're
joking](https://i.stack.imgur.com/A89BZm.png)](https://www.youtube.com/watch?v=WfVlQBSex0U)

> Daiku: Oh come on, everyone said they had cram school and left...  
>  Daiku: And you're no fun, Sekiguchi  
>  _Sekiguchi is reading a book silently_  
>  Daiku: Don't you go to cram school, Sekiguchi?  
>  _Sekiguchi flips a page, looks at Daiku, then continues reading the book
> silently while being embarrassed_  
>  _Daiku stares at Sekiguchi_  
>  _Sekiguchi is getting more embarrassed_  
>  Daiku: You're joking!

Why was Daiku surprised all of sudden?

Relevant video on [YouTube](https://www.youtube.com/watch?v=WfVlQBSex0U)




She skipped cram school so that she could stay at the club. When he, being the
last person left, asked about it and she blushed it implies she has a crush on
him and wanted to spend time specially with him, he realised this and was
shocked _~ooh young love_




She skipped cram school so that she could stay at the club. When he, being the
last person left, asked about it and she blushed it implies she has a crush on
him and wanted to spend time specially with him, he realised this and was
shocked _~ooh young love_

