Bibibitto Izumi-kun

Santa Izumi, 15 years old, lives a life where he leaves everything up to everyone else with zero will of his own...
Is that about to come to an end?! Santa was planning to get through high school innocuously, without any fuss, without ruffling anyone's feathers, or being laughed at. One day, while visiting the archery club during observation period, something just clicks, and a whole new feeling takes off inside him. Every day's full of screw-ups and embarrassment, but Santa's pure, straightforward, and oddly endearing presence brings color to the youth of everyone around him!

(Source: Futabasha, translated)