仲間を守って死んだら二十年後の同じ世界に生まれ変わった件……でも俺、転生二回目なんだけど？ (Associated Names)

The protagonist, Towa, once died and was reincarnated into another world. However, in that world, Towa sacrificed himself to protect his friends and died again… and then, he was reincarnated into the same world once more. Although a considerable amount of time had passed since his death… his former friends, unable to accept Towa’s death,…