kaworukun's manga / #Mita Ori(2)

Age gaps are either a hit or miss with being weird and pedo, or cute and fluffy. Thankfully this one wasn't too bad. Mc is 18, love interest is 26

Ryou and Keisuke are boyfriends, and polar opposites. When the usually energetic Keisuke gets a bad cold and loses his voice, Ryou realizes how lonely it is without Keisuke's chatter.