Portgas D. Ace from One Piece - Smiles as he sacrifices himself to protect his brother, Luffy

Jiraiya from Naruto died with a smile putting all his faith in Naruto to be the Child of Prophecy

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Chifuyu Matsuno from Tokyo Revengers died with a smile on his face knowing that Takemichi will come through

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Rengoku from Kitmetsu No Yaiba died with  a smile as he successfully protected everyone from Akaza's assault

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Itachi Uchiha from Naruto died with a smile knowing his death will make Sasuke the hero he was meant to be

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Ai Hoshino from Oshi No Ko had a smile on her face in her last moments and for once it weren't a lie

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Nagisa Furukawa from Clannad - She dies peacefully with a smile after giving birth to her daughter

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7+ Anime Characters Who Go Life And Beyond For Their Sibling