My Sweet Girl, Volume 10
This will be the hottest summer yet! After overcoming the love triangle with Hagiwara through the sports festival, Koeda obtains even more of Masamune's affection for herself. When the seasons change and summer arrives, the two of them go to the beach with Hagiwara and Take. While at the beach, Koeda's feelings for Masamune grow, and she tells him that she wouldn't mind continuing "intimate relations," which have been on hold since their hot springs trip!