Its a fun and dumb harem trash. Plot MC was "bullied" by three other kids by forcing weird punishments on him upon losing games. He goes to tokyo and returns as a high schooler after 5 years. He has prepared in every possible way to defeat those bullies from his childhood. But turns out, that they are actually girls, and yet, in the true spirit of gender equality, MC will still try to defeat them in games and complete his revenge by punishing them. Meanwhile, the girls who have always been in love with him and "bullied" him for attention, are now planning to finally makehim fall in love with them.

Review
I should start off the review by saying that this is really really dumb harem series. From the very first chapter, you know exactly what you are getting into. There's no "story" here. Its just harem ecchi comedy gimmicks at full force.

The series more or less follows the same template/formula.
1. MC challenges the girl/girls to a game (with maybe multiple rounds)
2. Either the MC or the girls lose a round.
3. There's an ecchi penalty for the loser. The ecchi will be limited, so don't expect much.
4. play more rounds with more penalties, until the chapter/arc ends.
5. Go to step 1

We just keep repeating this loop, and rotate the focus between different girls. All the girls are great and worth shipping.
1. Big booby rich girl: She's lewd and openly declares that she will go to any extent to win against the other girls.
2. Wrestler innocent: She's really athletic and an extrovert. But she's innocent when it comes to ecchi.
3. gamer streamer horny: She's an introvert living alone, but she's the horniest of them all. masturbates while thinking about MC.
4. ???: The hidden route and I will avoid spoilers.

Finally, the main attraction of this series is our MC. He's not some lonely loser getting noticed by a popular girl. He is actually talented in studies, sports and everything you can imagine. works hard and respects other people's effort. OTOH, he also simps for a v-tuber. But, overall, I think this is a guy who actually deserves the girls.

I think the series does a good enough job rotating the focus among all harem members. There is some shallow "drama" at times, but the series maintains its fun wholesome harem ecchi vibes throughout the story. If you belong to the target audience of this series, then I would definitely recommend giving this a chance.