Plot is weak! Main character is boring, annoying, immature despite being a 26 year old man, useless in ever sense of the word, has shits for brains. It makes no sense how can a grown man go back into his younger self and be more immature than everybody else around him? How can you say you wanna be a delinquent and you're more useless than even an average person. God it's so frustrating to watch. All he does is cry and get punched every f**king episode. If anybody thinks this is good they need some psychiatric evaluation. And for everyone comparing it to erased you're incredibly dumb, erased was wonderful and sensible. This anime has absolutely no redeeming qualities.