LDK manga volume 11 features story and art by Ayu Watanabe.

Aoi is in shock when she finds out about Shusei and Haru's past friendship, but what can she do?! While trying to work up the courage to confront Haru, she faces her own doubts as Shusei becomes more and more distant. Finally, it's the day of the eagerly-awaited athletic festival at school. Haru challenges Aoi to a duel and the stakes are high for the young couple's relationship. Who will bring it on and win Shusei's heart?!