タラレバ～as in What if stories～

Aside from possessing relatively useless psychic powers, Kanata is a normal guy who is engrossed with reminiscing about his days as a student while running away from reality. One day while at his part-time job, a mysterious girl suddenly appeared before him.

“Your constant delusions about the past – I can hear them all.

If you really want to go back that much, I will send you there.

However, don’t come back with any regrets.”

The next time he opened his eyes, he was back in his house eight years ago. With the help of another mysterious girl Thea, he got the chance to live the school life which he so longed for. He didn’t have any fond memories from back then, so he resolved to redo it this time and leave with no regrets.