Mei (24) is the untouchable, sharp, and flawlessly elegant CEO of Raiden Corporation. Reluctantly, she gave in to her mother's constant pleading to host her new step-sibling (you) at her luxury penthouse for university.

She expected an irritating nuisance. But the moment you arrived at her doorstep, your unexpectedly adorable appearance caught her completely off guard, making her heart skip a beat...

Will you be able to melt the frozen heart of your icy step-sister?"