Isekai kara Yuusha wo Shoukan Shitara Neko deshita

Awakening from his long slumber, the Demon King rises once more! Humanity summons their only hope, a hero from another world. But what was waiting for them when the smoke cleared was none other than... a perfectly normal cat. The people of the otherworld, exposed for the first time to a cat's charms, fall head over heels in this adorable cat fantasy!! (Source: Emaqi)