The Savior <<Messiah>> ~The former hero who saved another world beats the real world full of monsters~

Messiah: Isekai o Sukutta Moto Yuusha ga Mamono no Afureru Genjitsu Sekai o Musou suru, 救世主《メシア》 ～異世界を救った元勇者が魔物のあふれる現実世界を無双する～, Kyuuseishu ≪Meshia≫~Isekai Wo Sukutta Moto Yuusha Ga Mamono No Afureru Genjitsu Sekai Wo Musou Suru~