Who are the main characters often involved in 'naruto absolute defense fanfiction'?

A world filled with heroes with superpowers. A world attacked by calamity fiends. A modern world filled with wonders and dangers. Shi Xiaobai, a child from normal Earth, walked into such a world, proclaiming to be its king. But at the first signs of danger, he is forced to make a choice, one which he cannot refuse for time would repeat, making him face the choice again. He is not humble nor is he modest, but neither is he delusional. Yet, the Absolute Choice seems to make fun of him. Will the joke be on him or will he laugh at his opponents? There will be many watching his escapades, and there will be some joining him in his adventures. To see through the world and to grasp its truth, that is the destiny of the King.

Sun Mo, the top teacher of No. 2 High School was transported to Tang Country of Central Province after falling into the water and became an intern teacher which just graduated. He actually has a fair and rich fiancee who is actually also the headmaster of a famous school. However, the reputation of this school has declined and the school was soon to be removed from the education list and abolished... Sun Mo's mission is to help his fiancee to sit on the headmaster's chair securely and make the school return the rankings of the nine greats (the top nine schools.) After he obtained the Absolute Great Teacher System, he could mold trash into gold, helping lousy students to become geniuses. Under Sun Mo's guidance, his disciples who used to be bad in school, could rule supreme in terms of their education in a year, become a 'study-emperor' in three years, and an academic god in five years. They would soon become big BOSSes in studying! You dare to say that I, as a great teacher, depends on false reputation? The Sword Hero, Spear Saint, Saber Devil, Holy Maiden, Peerless Country Leader, Devil Emperor, Two Saints, Three Paragons...all of them were taught by me! Are you scared or not? The thing I like most is to transform a bronze-grade salted fish into a king-grade BOSS. Sun Mo stated!

Bell Cranel was rejected by every familia he tried to join until he met Hestia. In a few, he was rejected quite violently. And in one particular instance, he was thrown out and bashed his head against a wall. Well, that's apparently where I come in. Not sure how and why I'm here. Not even sure who 'I' really am at this point since Bell's memories are definitely clearer than 'mine'... But I guess we're doing this. Hopefully I've got some useful cheats. Maybe?

This is a story about a boy who gets transmigrated into Naruto's body right at the point where the story began. Filled with excitement and hesitation he takes his step forward in order to not get killed without enjoying this unconventional life to the fullest. If you want to support me, here's my Patreon- https://www.patreon.com/Horny_Gentleman

Shen, who transcended dimensions and arrived in the world of AST, Kyushu. He will conquer beauties and treasures as he will surpass the power of nine continents. On the path, he will encounter many mysterious beings from Ancient times and extinct races. With his growing ambition, he will discover many changes while searching the secret behind his reincarnation. Support (Patreon): http://bit.ly/PatBored

Reborn on an ordinary Shionin of the Uchiha clan, Ryu thought he was going to spend a life of inaction, but he did not expect to bind the sign-in system. Check in at Kannabi Bridge and get reward [Rinnegan ] Check in at Hokage Residence and get reward [Flying Thunder God Jutsu ] Check in at Valley of the End , Get reward [Sage Body ]