Baki Gaiden: Retsu Kaiou wa Isekai Tensei Shitemo Ikkou ni Kamawan

バキ外伝 烈海王は異世界転生しても一向にかまわんッッ

Retsu Kaioh, reincarnated into another world, engages in epic battles against swords, magic, and even powerful creatures of this other world in order to "prove that Chinese martial arts are the strongest in this other world"—a one-of-a-kind isekai reincarnation action story! (Source: YouTube description, translated)