"I love it." Christmas day. She (Akane) watches her favorite idol's Christmas live performance in her boyfriend's (Icchan) room. When the excitement dies down, the two make out with each other... If you don't say "I love you," you won't get the message. As the lyrics of the song played on the screen, she suddenly remembered that she had never heard Icchan say "I love you" and became unfaithful. Icchan is embarrassed, but he expresses his feelings in words. Then they start to make love. They make a promise that one day they will do it live.

"Will you marry me?" And eight years later...

"Love is a virgin." Determined to lose her virginity today, Mizuki heads to her boyfriend's (Kento) room in high spirits. However, her plan fails, and Mizuki is standing on the bank shouting her heart out to the setting sun. There, "Ah...so...it was........." She turned around to see Kento. In a panic, Mizuki fell down and was taken care of again in Kento's room. In the awkward atmosphere, Mizuki made up her mind and hugged him. If I let you leave like this, you'll be ...... angry. ......