Rebirth: Love me Again - Chapter 303: Betrayal in Plain Sight

Beneath the neon-lit bustling city, unknown monsters lurk.Martial arts sects, biological modifications, cutting-edge mechas, golden bloodlines, abyssal alien species...Chen Feng arrives in this world, similar to Earth, and discovers he can enter a strange dream world where he can pick up various light groups.【Limit-Break Light Group: Can enhance martial arts skills, break limits, and upgrade!】【Attribute Light Group: Can randomly increase four-dimensional attribute points, bigger and stronger, add points!】【Talent Light Group: You gain the talent - Cyan Armor, able to switch combat forms, with power increase by 100%........】【Skill Light Group: You obtain the Extreme Refinement Method, destined to break human limits......】As martial arts gradually decline, and modified humans and cutting-edge mechas flourish,Chen Feng has achieved ultimate limit-breaking in the dream world, integrating extraordinary talents, and continues the path of martial arts!Tear apart mechas with his hands, smash aircraft carriers with his fists!I am the great King of the Century..........My name is Chen Feng, the peak you can never surpass.

Using the ability to freely travel between Earth and the fantasy world so he can… become a porter of two worlds…?

Bai Yang’s objective was to establish a production line that would yield hundreds of millions of pills, pellets, and artifacts…

- 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.

I met the male lead in prison.