13-nengo no Kimi

13 years ago, Tatsuomi died in an accident and is then reincarnated as middle school student, Fushimi Arata. And then one day, a new teacher comes who was his previous life's lover, Midorikawa Utako. A reincarnation heartful story.
Notes:
- Originally published on Pixiv and collated by Square Enix for print release. Later serialised in Gangan Pixiv.
- Includes 3 extra chapters.