1x5 - Isekai Cheat Magician

Taichi manages to defeat the Red Element with the power of the wind spirit, Aerial. So when he speaks to Lemia about hearing the spirit's voice and using her power, she pronounces him a Summoner. While he feels like that power is just another cheat, he heads into the city to find Rin and Muller. Along the way he rescues a woman being harrassed by some men, but that woman seems familiar somehow...