MTL - Harry Potter’s Book of Sin - Chapter 19 Embarrassing patron saint

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

The road to immortality is full of dangers and obstacles. Let's see how a young slave of a prominent clan changes his destiny and creates his own legend. Thousands of years later, the world bows to him and refers to him as the Celestial Master or Heavenly Locust Emperor.......

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Roland was just a normal college student living peacefully in an H-Grade City when he experienced his very first devastating heartbreak.

He found out that his girlfriend of two years was cheating on him with the City Councilor’s son, she even embarrassed him in front of a lot of people.

When Roland was already completely devastated and was already at his wits end, a virtual screen suddenly appeared in front of his eyes.

[Requirements: Experience a devastating heartbreak(Completed)]

[System bound!]

[Congratulations for unlocking the Face-Slapping System!]

Since then, Roland’s life has taken a complete turn.

The protagonist, having degenerated into a “loser” after being unable to find employment, gets caught up in someone else’s attempt to commit suicide-by-train and ends up traveling to another world. The numerous cheat powers he demands from God are all granted to him. But contrary to expectations, these powers bring about disastrous consequences for the protagonist.

Having reincarnated into another world, the optimistic protagonist (Yuuri) starts his(her) heart-warming training days with his(her) teacher.