Jobless Reincarnation - Mushoku Tensei - Chapter 30: Infiltration and Impersonation

Suzuki, an adult programmer, suddenly notices that he’s been thrown into a different world while wearing a casual clothes at level 1. He gained high levels and treasures after using the 3 times use-disposable-magic, Meteor Shower, once. After that he intends to do different world “sightseeing tours”? He meets 3 beast girls, beautiful purple and black haired sisters, and an eccentric blonde haired elf girl along with various people during his trip. Although there are occasional fighting with demons and demon lords, this is a heartwarming fantasy story at heart.

From brewing whiskey out of car tires to brewing immortal potions just because they are tasty.Regressed from a world where the only issue technology failed to solve was boredom, Theo, an adept nanomancer and master brewer, finds himself in the literal shoes of magic academy's trash teacher.Cultivation? Magic? Martial arts? Craftsmanship?No.Now is the time for this world's first Nanomancer to rise and establish alchemy as the fifth great subject for others to follow!

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

The first time they meet, he arrests her under suspicions that she's involved in a murder case. He's so handsome that she, as the head of an entertainment company, is determined to recruit him into her company, train him to be a star, and make him her cash cow! But he is neither short of money nor fame and refuses her. So she decides—to make him her boyfriend first.“I'm 5'4” tall. Do you think I need to tiptoe to kiss you?” She smiles brightly, ogling at him. The man gives her a deadpan glance. “Are you daydreaming?” She licks her lips and smiles. “Yes, I'm dreaming about having sex with you.” “......!!!”A few months later, Song Yi finally loses her patience and asks, “Do you like me or not? I've been chasing you for so long!” Tang Si smiles and whispers to her, “Miss Song, this can only prove that you're not attractive enough.” Annoyed, Song Yi is about to retort only to hear his husky and sultry voice. “Let me teach you—how to attract a man.” Her mind goes blank!At first, she imagines Tang Si to be a mature and reliable man, but it turns out that he's actually lazy, naughty, and damn good at seducing women!…“What would you do if you hadn't chosen to be a policeman?”“Be a star.” The man cracks a smile.“Become CEO Song's… sugar baby.”Everyone is shocked. “How dare this woman poach someone from our police force?”