MTL - Doom Lord - v2 Chapter 821 Smelling alienated beast

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.

The story is about a man whose compulsive tendencies make it impossible for him to keep a job, and a young girl who skips school and loves insects. The two meet, come to support each other in reintegrating into society, and fall in love. There’s a problem, however: namely, the parasites in their heads.

The story of “Lustful Paradise” is a sultry tale of passion and desire.Lucifer, a young and handsome college student, is in the throes of a sexual revolution. His lustful eyes land on anyone who catches his fancy, and he is not afraid to pursue his targets with reckless abandon. But Lucifer is not satisfied with this. He is looking for a bigger challenge, a greater conquest, and he is determined to find it.But there is more to Lucifer than meets the eye. An unknown secret lies hidden beneath the surface. It is a secret that will change everything and a secret that will bring chaos and destruction. And it is a secret that will soon be revealed in the most unexpected of ways.Will Lucifer's lustful desires lead him down a dark path? Or will he find redemption and love in the arms of someone unexpected? Only time will tell. But one thing is certain: Lucifer's lust will not go unquenched.

In the beginning, when they all thought that she was “he”….

ML #1: We will be brothers for life!

ML #2: This time I’ll reluctantly let you have the #1 seat.

ML #3: I will properly repay royal teacher!

ML #4: Ah Rong is my closest little brother, I trust him.

Afterwards…

MLs: I’m seriously such a fool.

MLs: What do I do, I think I’m gay. I fell in love with my bro/rival/teacher….

Afterwards….

MLs: I’m straight! As straight as steel!

Note:
MC is a girl crossdressing as a boy, she knows how to fight, and naturally possess the gold finger halo from the author.

All the ML(s) is the same person, 1v1, sc, HE

- Description from Novelupdates