[Crossover] I Hear My Parallel-World Self Is the Demon King

#I'm the Demon King in Every Parallel World#

Also known as #The Demon King's Diary#

--#But I'm Really Very Kind#

My deskmate is an utterly ordinary high school student.

My teacher is just an ordinary teacher.

My friends are all thoroughly unremarkable.

Everything around me is so completely ordinary.

Only I, though I seem unremarkable, am a hidden powerhouse among the crowd.

Content warning: The protagonist calls themself kind and is extremely narcissistic.

Content warning: First-person narration.

Complete in 20 chapters.

Theme: Strive to reach the pinnacle of life