Homemade cookies (手作りクッキー,Homemade cookies) were a baked good made by Tsukushi Makino. She based the cookies on Tsukasa Domyoji's expressions. On his eighteenth birthday, Tsukushi gave them to Tsukasa as a present.
Tsukushi Makino asked her friend Yuki Matsuoka on advice for Tsukasa Domyoji's birthday present. Yuki initially suggested a homemade cake, but Tsukushi's house did not have an oven. She settled on baking cookies on the family's fish grill. Tsukushi molded them to look like Tsukasa, thinking it "funny to draw [his] expressions." At his party, she decided not give him the cookies after seeing his lavish gifts. They eventually left the party together to escape his mother. Tsukasa brought her onto his family's yacht, which had no food on it. Tsukushi gave him her gift. Tsukasa was speechless at first. He then kissed her, saying "I'm so happy!" Tsukasa refused to eat any of them and stared at them instead. The next morning, he showed them to Rui Hanazawa. Tsukasa was upset when Rui took a bite of one.