If you're looking for manga similar to Sono Monban, Saikyou Nitsuki: Tsuihou Sareta Bougyo Ryoku 9999 no Senshi, Ou Miyako no Monban Toshite Musou Suru, you might like these titles.
Eugene, a hero, is forcibly reincarnated by the demon king Venomzard. In a world far in the future, he becomes a noble boy named Julius. Freed from his "hero" mission, Julius decides to enjoy his second life and his school life. However, his brother, Gaias, mocks him, and his parents and teachers consider him a failure. Having been reincarnated with the immense power of his previous life, Julius unknowingly becomes a warrior ...!
Masumasu Academy, an Academic City floating in the Pacific, is home to children with mysterious powers known as "Fiction". "Fiction" grants them enhanced physical prowess, as well as one additional ability. What will happen when a time stopper, Kazuma, meets a cute girl with the ability to move at lightspeed, who knows and is searching for him?
A treasure with the "power to change the world" that sleeps in a certain ruins dungeon. Now there were those who aimed at that treasure and challenged the dungeon where ancient creatures spread. First of all, Princess Knight Lilithia, the first princess of the Kingdom of Langbird, next, the soldiers of the Georgian Empire, who are hostile to the Kingdom of Langbird, and a young man, Eight, who has just become a slave of Lilithia for some reason. Eight was unintentionally embroiled in a battle to scramble for a treasure that could affect the survival of the nation, but when he approached the depths of the dungeon, he heard a girl's voice out of nowhere!?
Follows an adventurer who was kicked from his party after his partymates said that they didn't need a paladin to tank damage for them. When he decided to make his own way as an adventurer, his defeat of a monster gives him a unique "slave release" skill that instantly releases and teleports a slave somewhere in the world to him. Thinking that using this skill could only be good for the world, he uses it repeatedly and summons talented and beautiful women to him that would soon help him build a great country.
Man's true worth is to entertain the beauties of the world. Summoned in a different world called Romless, the college student Simon Claud (or Shimon Kurando) aim about women, treasures and adventures runs around the labyrinths, deserts or cities. Young ladies, princess knight, beast girls, elves or woman assassins, I'll get them all! The most absurd dark fantasy is now unveiled. Men must adventured until the death!