Ah! My phone—In the study room?…Ahh! Right!Thank you for finding it!We don’t talk much,but you're a nice person, ○○-kun♪I'll repay you next time♪I found ███-san's phone. It was the end of summer vacation. Before returning it to her, I suddenly thought of entering ███-san's birthday on the lock screen. And the lock was unlocked. With a trembling hands, I opened the photo app and looked at the first photo.A string-like swimsuit... The man who is always with ███-san... The fluid sticking to her body...I didn’t have the courage to bring it up to ███-san, about looking at her phone without permission, or about the photo...