Industrial Strength Magic - Chapter 4: Maths

An ordinary sect cultivator, with the help of the immortal mansion, gradually grew up in the cruel world of immortality, and his mind and body transformed together.

Mortal flow, partial dark wind.

- Description from novelbuddy

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

The ‘meddlesome’ high school student Mamori Suzufumi helps a starving neighbor who had collapsed in the apartment next door by some chance.That person turned out to be the popular high school idol, Sasaki Yuzuki!Yuzuki had been on an excessive diet to maintain her ideal idol image.But when the worried Suzufumi serves her homemade cooking, she eats it with a face full of happiness while screaming,「——Aaaaaah… I can’t take it anymore!」With a face full of happiness, she finished her meal.Falling in love with her hearty appetite, Suzufumi decides to tempt Yuzuki with her favorite foods to make her fall for him through ‘food seduction.’Pork bowl, ramen, okonomiyaki——「I definitely won’t eat it!」That’s what Yuzuki says, but once again, she finds herself craving Suzufumi’s cooking today──

“….Krische-sama, are you not afraid of killing people?”

“……? No. After all, it doesn’t hurt Krische.”

Although gifted with the talent to do anything with ease, the girl lacked empathy.

In her world, there is only loss and profit. No goodwill, no love.

Inhumanly recognizing cold, mathematical logic as everything, she looks at everything in the world through calculating lens.

Return given profit with profit, loss with loss.

The girl was undoubtedly pure, yet undeniably abnormal—

Her favorite things are cooking, food, and being pampered.

Her specialty is mu*der.

—- This is the story of a slightly unhinged girl being surrounded by kind and loving people, and her journey to find happiness.