Suterareta Yuusha no Eiyuutan - Story 3-17: 『Making A Mistake, Apologizing, Starting』

Gods and demons fought, the worlds collapsed, only eternal immortal realm, lasting in the world.

After eternity, a god of war named Zhao Yun condensed the heavens and the earth, recast the cosmos, from the blue to the earth, marked the eternal immortal realm, in the name of the god, the king is over the world.

Since then, what he said is a myth.

- Description from MTL

One day, Lin Tian, an 18-year-old high school student, accidentally binds with a producer system. As long as he binds with a partner and cultivates them into a super “idol,” he can receive rewards. When he meets the equally eccentric and obsessive cellist Gan Yanyu, they hit it off immediately and start creating short videos, striving to achieve the highest honor in music competitions!Thus,In a season of cherry blossoms, just after winning an international competition, Gan Yanyu plays a piece that Lin Tian has never heard before on the stage in front of thousands of spectators.To Lin Tian's astonishment, the young girl puts down her bow and beams a radiant smile.“You’ve written so many pieces for me; this one is my composition for you.”“It’s called—‘Love Letter.’”

When the system warned the world that it was coming a week in advance, Alex couldn’t have been more excited. In college for a degree he didn’t care about to get a job he didn’t want, the promise of a world where magic and challenge awaited — even at the potential cost of death — was the best news he possibly could have imagined. Alex was ready for a new life. He ready for his only friend to shove him through a portal into hell the moment the apocalypse started. Instead of getting to punt rabbits and farm wolves, Alex finds himself stranded in a warped world where even the bugs are stronger than he is. Even with a summoner class that gains the powers of its monsters, most people would have died. Alex didn’t get the memo. He might have liked challenge a little bit too much. Where others saw certain death, he found something else. Opportunity.