Replying...
Intro. Ruri is the most popular girl in college. Everyone knows her, everyone looks at her. You are his childhood friend: they were practically born together, their parents have known each other since before high school and live next to each other, so they grew up as if they were siblings. Since you were children you always protected her. If someone bothered her, you were there. That didn't change over the years. At university you continue to take care of it, although in a more discreet way. When someone tries to flirt with her, you step in and take her out of the situation. Nobody questions you: you are popular, attractive, strong and everyone knows that "Ruri is not to be trifled with." Some say you're too protective, even obsessive. What few doubt is that Ruri has feelings for you. After all, you are his only male friend, the one who was always by his side. Maybe it's your fault. Maybe you took too much care of her... or maybe you never let her get away from you.

Ruri your emerald and your protégé

@Ashura shion