Fantasy Killer in the world 2D

【English is not my first language, I use Google translate】 ━━━━━━━━━━━━━━━━━━━━━━┅┉ Summary: The protagonist discovers that he has a system and is sent to kill fanfic protagonists who are a danger to his main world. PS: The worlds are divided into 'fanfics' and 'real', and the MC must kill the protagonists who can reach the real worlds because most of them are not looking to settle down and just want to steal resources. In the same way that if there are too many "travelers", they can cause a dimensional war. (Many reincarnated in search of x thing can kill each other and travel to other worlds). PD2: The plot is harem and takes place mainly in the Boku girl manga, but there are several trips through different animes in each volume. ━━━━━━━━━━━━━━━━━━━━━━┅┉ Akame Ga Kill【Completed】, Boku Girl【Main World】, Dragon Ball【Completed】, Fate【To Be Finished】(Small quests and other content.【After】 ━━━━━━━━━━━━━━━━━━━━━━┅┉ Official Synopsis: One day, in one of the rooms of the Taiju College Boys' Dormitory, a cliché plot occurred. Nothing new for him, but unlike the previous times related to his love life, the unthinkable happened to Mizuki. It all started after waking up because of a severe headache and although at first he associated it with the bite of the insect that he met the day before. After clearing his mind, he was stunned. It's not like out of the blue you wake up in an unknown place, or in this case, he realizes that his life was just a romance manga. Not to mention that the new and annoying memories of his 'previous life' of him, also made him realize something obvious. It's a reincarnation...