My Yandere Succubus Daughter is Mommy-Warrior's Natural Enemy - Volume 5.2Chapter 11

After drowning in a swimming pool, Randy awakens in an oriental fantasy world, transmigrated as Hu Shengyi, the youngest son of a humble family. In his new life, Hu Shengyi possesses a weak and pale body, an ungraceful face and a small penis. He hoped that this transmigration would be an opportunity to start his life anew, the darkness of depression enveloped him, even with the unconditional love of his mother and older sisters. Unable to cultivate magical abilities or develop powers, Hu Shengyi decides to end his life.But just before he takes the final step, a mysterious message appears, like something out of a video game: “Welcome to the Onahole System.”[Additional Tags]Anal, BBW, Big Ass, Big Breasts, Blowjob, Chastity Belt, Dark Skin, Dickgirl on Male, Femdom, Full-packaged Futanari, Futaket, Futanari, Glasses, Group Handjob, Huge Breasts, NTR, Cuckold, Threesome, Foursome, Hardcore, Milf, Gilf, Young & Mature, BDSM, Dual Cultivation, Incest.

I found myself reincarnated into a game where you raise pretty girls to prevent the world’s destruction.But wait, what are the guys doing while the girls are busy saving the world?As it turns out, it’s a world where women are strong and men are weak.In a world that disregards men, I have to survive as a ‘man who wields a sword.’But… I’m incredibly strong, you know?

One morning, after being bound to the system, MC started his routine of always being captured/ attacked by the ML.

It doesn’t matter if he transmigrated into the ML’s little brother (TN: Here I think brother disciple) or master or opponent, but in the end he is still forcibly taken by the ML.

After transmigrating to many worlds:

MC: Come out system!!! The heck?! Why do these MLs not love their female goddesses, but insist on doing it with me! Aaaaahh!!!

System: …. __(:3」∠)_ Don’t ask me, I also don’t know.

- Description from Novelupdates

When The Cute Kunoichis Spied on Their Teacher's Secret is a light novel written by Kazuma Kamachi and illustrated by Ryuushi Tajima.

The story takes place in a world where Japan never ended their isolationist phase, and agents from foreign powers are always threatening to steal the country's advanced technology. In order to combat this threat there has been a resurgence of ninjas that use Strategic Martial Arts, techniques that combine cutting-edge modern technology with a traditional foundation of martial arts and ninjutsu. The story follows Souha Sugiyado, a 17-year old ninja instructor and former ninja prodigy who was forced to retire from active duty by the wounds he suffered in his last mission. Souha's four students are all kunoichi who have all gained the rank of Elite Ninja, the highest official rank available to ninja. However, one day two Shogunate ninja approach him with the news that his four students have gone rogue and have stolen a portable modular nuclear reactor, and thus they ask for his help in bringing his students to justice.