For My Own Good

The only way out is through. In the midst of a disastrous monster attack fated to end the world, a strange device throws Hee-Jae back in time 20 years where he meets the students of his foster father, Seok-Young. Now it's up to him to take them under his wing and stop the apocalypse so he can finally set off for a peaceful life. (Source: Manta)