Nobody's asking for your permission. A girl decides she likes a boy. She tells him. That's it. No manufactured misunderstandings, no episodes of him not knowing, no "she's too shy to say anything" arc stretching into season two. The romance happens because two people want it to happen. The show trusts that directness is enough, and it is. For thirty minutes across three episodes, you watch two people figure out what comes next instead of what came before.
Hiyokoi is a romance special from 2012, made up of three episodes. It was shown on TV within the Ribbon x Oha Sta lineup of specials.