At least they had segs, but everything happened so abruptly. Usually the fun parts of these kind of stories is how the characters get closer and eventually together, but here it is barely touched through the entire manga. Shame, because Sakura-sensei was a really cute and sexy character, I would've loved to see she and Gin coming together.
Probably some time skip going to end the story, but I don't think Sakura and Gin gonna have some happy ending together, but I hope that dying thing is just a bait...