In the present, Kuze receives a letter of challenge from Mizuki which draws him out of his home to the school rooftop to meet Mizuki. Through her professing words of love to Kuze, he finally gives in and wants to stay in love with Mizuki, but his heart gives out again. Mizuki receives emotional support from Kei and Chihiro during this time. Kuze decides to undergo the risky surgery to try to live longer with Mizuki.