Tensei Shitara Slime Datta Ken
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Lonely thirty-seven-year-old Mikami Satoru is stuck in a dead-end job, unhappy with his mundane life, but after dying at the hands of a robber, he awakens to a fresh start in a fantasy realm...as a slime monster. As he acclimates to his goopy new existence, his exploits with the other monsters set off a chain of events that will change his new world forever.

Tensei Shitara Slime Datta Ken Season 1
Tensei Shitara Slime Datta Ken Season 2