ReLIFE

Kaizaki Arata is a 27-year-old NEET, who failed at every job opportunity whenever interviewers hear that he quit his first job after having worked for only 5 months. One night, he was offered by a mysterious man, Yoake Ryo, to become a test subject for ReLIFE Laboratory's Social Reintegration Program. Through a pill that would make him 10 years younger, he gets the chance to redo his life. He participates in the experiment and restarts his high school days, making friends and falling in love.
(Source: MDL)
~~ Adapted from the manga series "ReLIFE" (リライフ) by Yayoi Sou (夜宵草).