The Speedrun Manual of Miss Witch - Chapter 136 - July 1st, Weather, Overcast (3/4)

Utsuro no Hako to Zero no Maria, or The Empty Box and The Zeroth Maria, tells the sinister story of Kazuki Hoshino, who is almost madly attached to his everyday life, and his antagonist Aya Otonashi, who suddenly transfers into his class—for the 13,118th time. She majestically announces to “break” him, without paying heed to anyone else around them.

“I'm sorry, Kiara,” he began, his voice heavy with regret. “We regret to inform you that we can no longer administer these drugs to you.”I was dying. I was going to die.Kiara Williams was dying from Stomach Cancer. With only a few months to live, she could only stay at the hospital.Alone. Her annoying husband did not come and visit her, only her best friend, Jessica remained by her side. She could no longer pay the bills and was sent home.Arriving at her house she caught Jessica and her husband together in bed. In a fight, her husband pushed Kiara down the stairs.Kiara died.Or did she? She was reborn ten years back, but rather than being destroyed, she begged a strange man for a one night stand unless she may die again.

Master said, the woman I held in my hands, I must protect for the rest of my life.

Master said, it’s hard to cultivate as a Demon, and once you enter the Demon Dao, you should never look back.

Master said, Heaven is a Circle and the Earth is a Square; that Circle represents (is) consummate perfection, and that Square represents (is) the edges and corners of one’s Heart, it’s a rebellion against Fate, a Disobedience to Heaven.

My master is named Ning Fan, he’s not a person, he’s merely a Butterfly who has entered Demonhood. He was searching for someone. No one knew who he was searching for. No one knew how long he would search for…

- Description from novelupdates

The story is about a a hitman, Who dies because of his own recklessness and transmigrates into a game he used to play after his retirement as a hitman.I'm not gonna spoil any further, but i might answer few of your questions.Is MC overpowered?Nope, he'll become strong over time and all battle he'll fight will be because of his effort and techniques.Is there magic and adventure?Yes! It have both magic like normal isekai with adventure and fighting with monsters and many other things. There are other important things like “Essence Stone” But let's talk about it in the chapters.There will be harem?Not really, He will be in contact with many beautiful female and males but one waifu but i haven't decided yet.All i can say is, give it a try, I'll try my best to make it worth your time.