Yo! It's Kiki! Before you start the fanfic, I would like you to know some things that might avoid future misunderstandings or just set up expectations I guess. This is a funny fun wishfufilment harem story gotta catch em all style or whatever people call it these days. Also hentai logic for seggs or lemon scenes because real biology is not that fun or simple...

The main character will have Dragon slayer unrealistic proportions for his shaft. Why? You ask... Because I like it and that's what I'm gonna do. If you're worried about the female characters having to deal with that, you can think of it one of two ways:

1- We are working on hentai logic here, so any organ that doesn't have a purpose during intercourse, just doesn't exist during sex.

2- The girls involved just have space magic modified genitals, so it's much bigger inside than outside. 

Futa? Not really, even though it's my thing, this one won't be the one. Unfortunately. 

Hope those help you not question biology during 18+ scenes, cause quite honestly it won't be present for the most part, at least not real biology. Only Hentai Biology prevails. 

Yuri? A pity but no. T-T

Loli? Yeah, why not. The FBI are already on my door anyway. 

R*pe? I mean... It will exist in the story, but don't worry too much, it's going to be ok... Probably... Maybe... Who knows... 

Netorare? Tempting just to mess with the readers, but no, I probably wouldn't be able to take all the bullying, you guys are evil.

Will there be clone Sex? Nah. Some of you might ask, with a harem that big how will he have time to do anything. The answer: Time control.

About the worlds that this fanfic will have: Re: Zero, Fairy Tail, My hero Academy, Solo leveling, Tensura, Naruto, Overlord, Genshin impact, Dragon ball, Omniscient Reader's Pov, Avatar, Tower Of God, Arifureta, Chainsaw man, Cyberpunk: edge runners, W.I.T.C.H., Jujustsu Kaisen, Demon slayer, Death March, Ben 10, Seven deadly sins, Honkai Impact 3rd, Soul Land, The beginning after the end, Invincible, Fate, Danmachi, Pokemon, Tales of Demons and Gods, Kingdom hearts, Against the Gods, DxD, One piece, Marvel, DC, Tokyo Ghoul, So, I'm a spider, so what?, Crossover world(Final world).

Just keep in mind that this might change later and that this might not be the exact order of the worlds, plus if I find it necessary some worlds will just get way more chapters than others. 

Wish fulfillment go brrrr!