Ep. 11: Kuze accepts Mizuki's challenge and chooses risky surgery to extend his life with her.
Aired on December 16, 2008

Kuze leaves his home after receiving a challenge letter from Mizuki, leading to a meeting on the school rooftop. Mizuki confesses her love, prompting Kuze to agree to remain with her, though his heart fails once more. During this difficult period, Mizuki finds emotional support from Kei and Chihiro. Ultimately, Kuze decides to undergo a dangerous surgical procedure in an attempt to prolong his life so he can stay with Mizuki for a longer time.
Episodes
- Ep. 7 · Yuko gives Yu a knife from Akira while Mizuki faces Kuze's harsh rejection and chest pain
- Ep. 8 · Yu and Yuko's past reunion with Akira contrasts with present conflict involving Kuze.
- Ep. 9 · Yuko and Yu confess love while Akira destroys himself and Kuze faces isolation
- Ep. 10 · Yu and Yuko reunite while Yu studies art and Yuko befriends Miki before a tragic accident
- Ep. 11 · Kuze accepts Mizuki's challenge and chooses risky surgery to extend his life with her.
- Ep. 12 · Kuze survives surgery while Yu reunites with Yuko in Japan for a final sunrise