At first I was intrigued by the concept and began to read it. I enjoyed it; however, then it just kept getting more and more dumb. The main character doesn't take advantage of the time slip at all, it seems as if all his relationship with the females are accidental at most. Perhaps it is because I am not japanese and do not understand how kids in japan jostle around together. However, the amount of situations where the female characters are "required" to get naked intern arouse the main character to the point of climax is just absurd. It just pisses me off and it feels as if I am just reading a tease hentai or something. The plot is little, if existent, and I frankly am getting quite sick of the same routine of "this girl, is this, she has to get naked because of this, and somehow touches my penis and I climax, but it is okay because she doesn't know what any of that is" It was funny the first time, perhaps I laughed the second time; but now it just feels redundant and trite.

Mini spoilers and reasons that I got so annoyed with the useless protagonist.
Many times great mangaka's start off as hentai artists, Oh Great! being one, this author is not one of them. I am on chapter 12 or so, I may change my opinion; however, I highly doubt it seeing as I just skimmed the volume it involved same damn crap all over again. I will force myself to read through more chapters and hopefully I will eat my words, because I hate to see an interest concept go to waste. For those who feel they wasted their time on this story here are a couple of different ones with same concept of time slip.
Wagatsuma-san wa ore no Yome - Slice of lifey romance etc.
Ore ga Doutei o Sutetara Shinu Ken ni Tsuite - a darker storyline

... Last updated on March 28th, 2014, 3:43pm

Imagine going back in time to when you were in elementary school but keeping your "Grown up" state of mind. Remember all the girlfriends you could have had if you hadn't been pressured by all the other kids. Got that image?? WELL DO YOU ?? WHAT THE HELL ARE YOU DOING IMAGINING IT, READ THE DAMN MANGA!!

This is a extremely interesting and very amusing manga. And good artwork.

---Summary---
Shouta was a untalented 25 year old man who after wasting his life, went to his high school reunion but fell into the school pool sending him back in time. He retained all of his knowledge of his fellow classmates from when he was in the future. Not only that but he is given the opportunity to change his life.

This manga is addicting and has me intrigued because...
1. It is hilarious.
2. It is Interesting to see what Shouta does in his 5th grade shoes.
3. It puts a good amount of balance on romance and on ecchi/pevertness.
4. It has a good concept.
5. It is cool to see the relationship between Shouta and girls (because he has a "Grown up" mind set and all of the other kids do not)

Up to the point in which the manga is, you can tell Shouta has changed his future by forming bonds with girls that he originally came to be hated by. Because he stands out from the other boys in elementary school, he has the knowledge to get a lot of girls to like him.
Example---There was a girl that hated Shouta in the future, but because he went back in time, he became friends with the girl that he normally hated because of his mature(er) personality.

This guy is obviously going to be popular with the girls of his elementary school and there will be hurt feelings among the girl that he truly seems to love. However we will have to wait a LONG ASS TIME because the manga is taking forever to be created and translated.

10/10 A great concept, a mature male protagonist who is perverted but has self control, intresting plot, and realistic yet unrealistic emotional development between characters.

Not to mention the sexyness that is grade school kids!(JK(Sort of(No seriously JK(Mabye(Sorry...)))))

... Last updated on July 1st, 2013, 2:54am

Involving elementary school kid, that is. They're innocent, grown-up's fantasy is the one who makes it obscene. And, since I like obscene things, I do a lot fantasizing

Also, the last chapter (chapter 9) is a bit of disappointment, the kid's reaction started to become unnatural, quite forced into nudity. I hope the mangaka didn't run out of idea or hold a notion that each chapter of this manga must contain sexual stuff. The way it is now, reading new chapter has become tiresome. If half of entire chapter contain no sexual insinuation, I would be delighted.

Unlike other timeslip manga, the protagonist doesn't seem to be using his maturity that well to his advantage. It is kind of disturbing considering it's involving elementary school kids though.