Loveholic
A photographer and a rep from an advertising company who have known each other for a long time finally start dating. There's very little drama involved in their relationship, mostly ghosts from the past. This is a nice story and didn't make me cry except for the New York flashback.
Honki Ja Neekara
A photographer who has just been dumped by his girlfriend finds a high school student sitting on his car in the cold.
Raiatea
A photographer in danger of losing his eyesight to lupus is obsessed with a man he met on an island as a child and determined to return there with him.
Zettai Unmei Houteishiki
The son of a yakuza group is reunited with his childhood friend, a photographer, three years after they were separated. Pretty bland but a bit touching. This story earned its third star for the scene where his classmates show up to defend him. This story gets into sketchy territory with regards to the kid's age. He would've been about 13 when they were separated, which is pretty young. Nothing happens between them at that point but a kiss, but they do kiss.
Mister Gravure
A manga editor and photographer start sleeping together and play the battle-of-who-tops. Sadly no switching. :-(
Chrysalis
A touching oneshot about a butterfly photographer and someone from his past.
Kimiiro Eden
A landscaper and a photographer fall in love. This is gentle and sweet. Other commenters have suggested that the parents in this might be the couple from "Kare no Shousou to Koi ni Tsuite" who love each other so much and go on the cruise! That would mean they're still together at least 15 years later. One is called Watabe, but the other goes by Seiji. The names in the other story are Watabe Kazumi and Yajima Hideki, so unfortunately, I don't think it's them (unless there is a kanji reading difference, maybe?). In the other story, Watabe was also the middle child with a younger sister. Here, he's said to be the youngest sibling (which is why he's such a young dad).
Portrait (natsume Kazuki)
Aoi struggles to suppress his feelings for his best friend, a photographer he has known since childhood and who has been like an older brother to him.
Eden no Uragawa