Koi no Hajime
A boy from a wealthy family goes to work in a restaurant in order to learn how the rest of the world lives, and while there meets another boy who is very poor. He eventually decides to live on his own and become independent, and after some initial confusion over motives, he and the other boy fall in love. His butler has the second story, about his love affair with the restaurant's manager.
Tsumasaki Ni Kourozu
This is a collection of love stories, all with a natural theme: fungi, fish, and foxes/supernatural elements. The art is gorgeous and the stories themselves gentle.
Spicy & Sugary
I preferred the first story between the detective and his roommate. The art style is lovely! ETA: The first story is a tie-in to "Beast & Feast." If you've read that, it makes a lot more sense at the end when the detective & yakuza show up!
Koiike
This is so cute I grinned my face off. Multiple stories at the same school, about a pond that binds you to another person if you're in it together. The last story between the underclassman and running team manager is my favorite.
Shiro Neko
It was like a small box of caramels. Each was tasty. You wouldn't mind more of each flavor, but this was still a good snack!
My Precious
The "flute" is a clarinet, says this former clarinet player.
Kimi no Nioi ga Suki