Mikami Satoru, a businessman, is stabbed by a criminal on the street and killed. When he regains consciousness in the darkness, he finds that he's been reincarnated as a slime! With nothing better to do, he spends his time devouring all the rare herbs and precious ores he comes across. As he does, he encounters the Storm Dragon Veldora, who was sealed in this cave 300 years ago by a hero's "Unlimited Imprisonment" skill. He's frightened at first, but as they talk, he becomes friends with the long-isolated Veldora.
It's certainly true that I 
underestimated my opponent a bit.
لا أنكر البتّة أنني استهنتُ بخصمي قليلاً
Ich hab den Gegner ein wenig
unterschätzt. Mein Fehler.
Es cierto que la subestimé un poco.
Es cierto que la subestimé un poco.
J’ai sûrement
un peu sous-estimé mon adversaire.
Ammetto di averla sottovalutata un po'.
Admito que dei uma leve
subestimada na minha oponente.
Честно говоря, я недооценил своего противника.