Masamune-kun's Revenge

After finishing their exams, summer vacation finally begins. Masamune plans his next move to get closer to Aki, and heads to Tsunade Island along with the others to spend time at Aki’s summer villa. Yoshino tells Masamune that if he’s not able to make any progress with Aki there, she would tell Aki everything that’s been going on. Once they get to the island, they meet the secretary of the Adagaki family, Yuigasaki, and Masamune tells her that he’s dating Aki. This leads to the two having to pretend that they are a couple...