From Pocket Comics:

"Your lips are so sweet... I feel like I'm going to melt just from a kiss." Michi is a beautiful receptionist who cheerfully does her best at her job. She seems perfect, but actually she loves eating -- a ton ! Because of that, none of her relationships have gone well, and she's afraid to confess her feelings to Taichi, the heir to one of her company's clients. One day, Taichi sees her eating a snack in secret on her break. It makes him set his sights on her! It's a Cinderella story for a receptionist who's afraid of romance.

Official site
Original Manga (COMICO)
Original Manga (Piccoma)
Official English Translation