The story takes place between the first and second season, where Rimuru confronts the swirling conspiracies in the Coleus kingdom. (Source: MAL News)[Written by MAL Rewrite]
Tensei shitara Slime Datta Ken: Coleus no Yume, 転生したらスライムだった件 コリウスの夢, That Time I Got Reincarnated as a Slime: Visions of Coleus
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