Komoe Harumachi

Komoe is a 6th grader at the academy.

Even though she is only 12, she has 111cm H cup breasts which make her the largest in the club and the second largest in the series; being beaten only by Keiko Shinonome who has 123cm. It has also been said that her breasts have yet to stop growing although this is not seen in the manga.

She finds many things difficult because her premature assets upset her balance and she is not yet old enough or strong enough to move without them controlling her movement. This causes her to be clumsy. This is not a good thing as her tasks for the club seem to involve doing chores where her assests get in the way, however she enjoys doing them since it makes her feel needed in the club unlike elsewhere where people do everything for her.  
 
Densuke often wonders if she even realizes that her breasts are so big. The bounce from them is so great that it has been known to launch Densuke several feet into the air.

She has a relationship with Densuke but it seems to be more of a brother and sister relationship compared to an adult one. Although that still doesn't stop the accidental gropes or awkward position's Densuke find's himself in with her like he does with the other girls.

In a page from the manga where Komoe is shown having Christmas dinner with her parents although they were shown from the back you are still able to see that her mother also has very large breasts.

Komoe can usually be seen withTeacher. Neither can see without there glasses. Komoe has two pairs, without her stronger pair she can't make out faces.