The New Gate - Chapter 2Book 16: (3)

Raised to be the perfect soldier for battle, Alexander had risen to be the youngest S rank Merc. After attaining the strength he so desired, his adoptive father had forcefully made him leave the battlefield. Alex unwilling to acknowledge his retirement was given a mission by his adoptive father. "The mission objective is to find a girl in the public High School you'll be attending and protect her."Triggered by the words mission objective, Alexander who had a 100% completion rate, accepted the conditions of the mission. Follow Alexander in his weird, almost comedic high school life.Alex's father: Hey Alex, did you get to school properly?Alex: Affirmative, I reached the designated place on time.Alex's father:So why did you call?Alex: The target I have picked is situated in classroom 1-B, while I'm in classroom 1-A. Asking permission to threaten the Principal into placing me in classroom 1-BAlex's father: DENIED!...

Luo Qing Chen is a wandering spirit that died thirty thousand years ago, roaming the Chaos Space

In order to not turn into dust, she is bound by an ice cold system to travel through time and space to complete missions.

Girls that pretend to be weak?  Slap them without explaining.

A silly cannon fodder?  Helping them amass treasures.

Meeting a real male god?  All of them will pamper.

System: Dear masters, what do I do if my host even dares bully the heavens?  Waiting for an answer, it’s urgent!

A certain male god: Change systems.

System: ヽ〔?Д?〕丿

- Description from Novelupdates

The Invincible Immortal Emperor reincarnates, taking over the body of a student at the Huaxia Medical College. He displays extraordinary skills both in combat and medicine.In his previous life, he was the undefeated War Emperor and the supreme master of medicine. Yet, he found himself ensnared in the mundane affairs of the world, confronted by endless temptations.Would he lose himself to these temptations or remain steadfast in his principles? Would he succumb to despair and decadence, sinking into oblivion, or would he rise with strength and resilience, reversing the course of destiny?As he sets forth on his path to reclaim his status as the Immortal Emperor, he vows to make the ghosts and gods of the myriad realms tremble in fear!

Transmigrated into a trash body of general's daughter as female lead? Peh! Too mainstream! Transmigrated to be a villainess? Common! What about transmigrating and ending up as cannon fodder? Have read it before!