Doushiyoumonai, Boku no Hatsukoi.

Yugi has been hiding his feelings. One day he finds out that his crush, Takeuchi, has been dumped by his girlfriend. Yugi dashes over to him to confess his feelings. Surprised by Yugi's pushy behavior, Takeuchi also starts to sense a change in himself. Watch these two clumsy people fall in love for the first time in this coming-of-age story!

(Source: Kadokawa, translated)