Ore to Kawazu-san no Isekai Hourouki俺と蛙さんの異世界放浪記 (Japanese); 我和青蛙的异世界流浪记 (Chinese); Wandering Stories in Another World; Chronicles of My Adventures in Another World With Kawazu-san (English);

Tarou was just an ordinary university student until a strange old magician summoned him to another world. Upon learning that his newly acquired magical power is 8 million (8 million more powerful than an average magician), he uses his abnormally powerful magic to revive the old man that caused all this... in the form of a frog. Thus begin the strange adventures of a boy with ridiculous magical power and Kawazu, the former strongest magician, now revived as a frog.