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Tensura Diary That Time I Got Reincarnated as a Slime Tensura Nikki Tensei Shitara Slime Datta Ken 転スラ日記 転生したらスライムだった件
This is the official “That Time I Got Reincarnated as a Slime” 4-koma spin-off series! Unlike the main story, this one draws from the daily life of Rimuru from a new perspective!Warning! Potential Spoilers for the main manga.