Heavenly Jewel Change - Chapter 31

In a post-apocalyptic fantasy world layered into multiple realms, humanity faces extinction due to their endangerment of the main realm. Forced to merge all realms back into one, a deity grants humans a leveling system to empower them, lest they become extinct when facing the mythical creatures. Noah, our protagonist, embraces the role of a monster tamer, trading his humanity for strength and eventually transforming into a monster himself. As Noah struggles with his evolving identity, he must navigate a world where the line between human and monster becomes increasingly blurred.

He said coolly: “One million a month, stay with me!” She raised her eyebrows and smiled: “Pay a 30% deposit first, no credit!” Show no mercy. When the contract expired, she turned around gracefully, and when he chased after her, she found that there was already a kid the size of a kid beside her…

- Description from novelbuddy

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

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──