Time Traveler (Toma)

One day, Hiro Utano, who worked at a research institute, suddenly finds himself caught up in a strange phenomenon. When he woke up, he found himself in a desolate, post-apocalyptic world overrun by terrifying aberrations! The weapon Hiro acquired was a strange gun called the “ES707,” capable of traveling back in time. To see his beloved girlfriend Emma once more, Hiro set out on a journey back through time using this gun! Encountering various survivors in this post-apocalyptic world and enduring brutal battles as he rewinds time repeatedly, Hiro gradually gets closer to unraveling the mysteries of this ruined world…. What exactly happened to the world? Will Hiro”be able to safely reach “DAY 0,” the very beginning of it all—?! (Source: KakaoPage, translated)