They agree to meet each other for lunch later and Tsugumi waits for him on the rooftop. While she is waiting, a boy (about 11 years old) named Yuuki comes up behind her and tells her that he is the one for Tsugumi. Tsugumi starts to laugh and tells him that she's already dating Shougo, so she can't be Yuuki's girlfriend anyway. To Tsugumi's suprise, Yuuki is pretty depressed about the news.
Later, Tsugumi meets Shougo in the art room because Shougo wants to draw her for his next art piece. Things get pretty hot and romantic between them until Tsugumi notices Yuuki on the rooftop...and he looks like he's about to jump! Tsugumi panicks and runs out the room to the rooftop. She grabs Yuuki and pulls him towards her, but Yuuki shocks her with a kiss!
Tsugumi is really upset about this (since it's her first kiss too!), but can't tell Shougo what happened. Just then, her mom calls and tells her to come home right away. Tsugumi asks Shougo to go with her so she can show her mom that she's actually dating someone now. When she arrives home with Shougo, Yuuki is there and her mom announces Yuuki as Tsugumi's new fiancee!!! And on top of that, Yuuki is Shougo's little brother!?
