Looking for novel where the MC fights 1 vs tons, or at least it feels like 1 vs world. Minimum 100. However, the MC shouldn't be too OP, as in casts a spell, wipes out entire army. He should be close too death all the time. Preferably the fights are descriptive, and the battle tactics are interesting. e.g. Zero no Tsukaima - Saito vs 70,000.
Silly alchimist ... Maybe. I mean he did die,so this should count as being close to death right? He isn't op...not a lot,but his mother in law (or second mother I don't remember) ... And the mc won a 1v200k "fight"