Love Sickness in a Budding Love

"I love you, Haru-nii. I want to be with you forever"
Daichi, the son of the restaurant owners from Haru’s part-time job, has loved Haru since he was in elementary school. Haru loves him like a younger brother, but when Daichi, now in high school, kisses him like he used to as a child, Haru finds himself unable to accept his "I like you" from Daichi as honestly as he used to. Lastly, Haru couldn't look directly at Daichi naked body now he that he has a body of a grown man and is in high school…!?
The story of a young puppy x an indecisive and timid older man that grow up doting on eachother☆