After reading comments and reviews I wasn't so sure if Utsukushii Kare was worth watching or not, luckily I gave it a try and i fell in love with this story and the way it is told.
Hira is awkward and easily bullied, but despite appearances and his own idea about himself he is absolutely not week and has an innate pride in wanting to stay in his role of servant for Kiyoi. Based on what is socially succesful he has a low opinion of his personality and ability to deal with others, yet he pursues his passion for Kiyoi relentlessly, blind to anything else beside his wish to be around the other boy. When Hira first meet Kiyoi, the boy incarnates an ideal perfection that is so beyond Hira he doesn't even see him not a real person. Hira is so set in his way that despite loving Kiyio and thinking the world of him he fails to notice the other boy feelings and keep misinterpreting his actions.
Kiyoi on the other hand, has the perfect life apparently. He is gorgeous, he is popular and admired by all schoolmates, he sits on top of the school hierarchy and yet he is obviously drawned by Hira. Without even knowing, Hira brings forth Kiyoi's vulnerability, his need of being truly seen and cherished for who he is beyond the perfect picture appearance. His emotions towards Hira confuses him and hurts him, especially when Hira seems to only be interested in admaring him form afar while never really wanting him.
Like most teenagers overwhelmed by emotions they hurt each others because they don't know how to communicate and watch past the maelstrom of personal insecurities. The process of seeing them grown up throught their struggles is what makes this story very sweet and tender.
As for technical aspects Japan never let down when it come to quality in BL productions: directing, cast, acting, writing are all top notch creating a real gem of a drama.