Maoyuu Maou Yuusha - Volume 1 Chapter 10, “Take up the Sword, my Master”

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

I became a heroine who dies during the protagonist’s awakening event.

In this fantasy world, music and aether rules all. However, there is constant threat of demons and natural catastrophes. The most powerful men are musicians who use music, alchemy, and spells to safeguard their homes. A young man who just wants to find his father and know why his family was exiled, starts his journey of becoming musician – a journey that leads him to the crown of justice and glory.We are born of aether, grow under aether and die as aether. Awe of Aether! – Holy Code.

Welcome Zhang Yu to the art life section of Yangtai. I am the host army!
     The literary world calls your work the peak of God.
     The comic world calls your work insurmountable.
     The music industry calls your work the limit of art.
     The film industry calls your work a box office myth.
     Of course, these are not what I want to ask.
     I want to ask…
     What is it for the sports world?

- Description from uukanshu