@Doomer
What I remember, I can be wrong.
-The MC never received a training, but went through a kind of process to strengthen his body and his style of fight is more informal.
-He is a human from Earth, in this world there are no natural limits.
-The laboratory focused on the individual techniques born from the black magic (or was it dark magic?) and made them fight .
-He is fighting a beast man and veteran adventurer (I think there are 5 ranks and the Wolf is rank 3, I'm not sure).
-The MC has a robust natural body and forged in the laboratory but he is more of a magician