Mugen Maryoku no Isekai Kikansha

A reincarnation fantasy where you challenge the ultimate leveling with the fastest cheat! Masaki Yuzuru, who used his cheat abilities to defeat an evil god in another world, chose to return to his original world to be reunited with his family and regain his peaceful days—or so he thought. However, one day, monsters suddenly appear all over the world and begin attacking humanity. With his seal broken and his abilities restored, Yuzuru rises up once again with his former hero party comrades to stop the evil god's resurrection. (Source: Firecross, translated)