"Kimi no Koto ga Suki de Gomennasai" is an original song by Utata-P.
The song tells a story of a schoolgirl (IA) who is too shy to approach her crush. Due to this she buys special contact lenses, after applying which the wearer "is sure to have their feelings be transmitted to the one they love". The manual reveals however, that the way in which the lenses work varies from person to person. In this particular girl's case something goes terribly wrong and after applying them she begins to shoot love beams from her eyes every time she sees her crush. This causes a massive disaster as all of her attempts to remove the lenses prove to be futile! However, the boy's clothing is able to absorb her love beams and they become a couple in the end.