Free! dj - Mako-chan Otanjoubi Omedetou! na Hon.

Pairing: Makoto x Haru

From Seabreeze Romance Scanlations:

It's Makoto's birthday today. His friends throw him a surprise party, but when the celebrations stop and his friends make their way home, Makoto finds himself fondly reminiscing about traditions from the past. He's always spent his birthdays with Haru, but somehow they're just more special when he gets to have his boyfriend as his real present!