Shampoo
Multiple love stories. Quick paced and not a lot of dialogue, but they moved me. The childhood friends who are inseparable and sleep (literally sleep) together a lot before getting together are my favorite.
Samishigariya no Love Letter
One afternoon, a boy finds a chocolate tin in his bag and begins to correspond through it with a boy he's never met. Childhood friends finally start dating. (The one where the older one is oblivious and thinks they're "practicing" and the love of his life is tall and blond with piercings, and everyone is scared of him. This is the story with the end comic where their parents have been in support of their relationship since they were small and had already looked into moving the families together and planning a wedding.) Ten years after his five-year-old friend proposes, a man has to decide if he wants to honor the promise that they'd one day marry. I skip this one on reread.
Oshiete, Ookami-san.
Multiple stories: childhood friends who fall in love, a guy who intentionally tries to make straight guys fall for him and then falls for a gay man he accidentally seduces, a couple who role plays to spice things up.
I Hate
Two sets of childhood friends reunite five years later.
Yome Ni Konai Ka
1) A man who is incapable of caring for himself finds himself one evening with a devoted bride - who turns out to be his male boss. 2) On the whim of his grandfather, a man marries another man named Aoi, whose grandmother was friends with his grandfather. They'd always planned for their families to be joined. But after the grandmother passes, the men stay together, to the chagrin of the young man's mother, who goes out of her way to make Aoi leave. I don't know why we can't call everyone husbands but okay. These were cute. :-D
Caramel Honey
A story about two brothers. The first half is about the younger brother, who falls for a classmate fated to appear attractive to everyone who sees him unless he's wearing glasses. The second half is about his older brother's love story with a classmate he used to bully. I found myself much more drawn to their story, probably because of my age - the brother and I are both in our 30s. :-P
Nee, Sensei
A student is in love with his teacher, who had dated his older sister years before. The final chapter is a quick oneshot, childhood friends reunited as adults when one has become a police officer.
Kakugo wo Kimete