This is actually finished. End at chapter 25 (not counting extra). Available on manga park for free (censored version). Add “psychology” to the genres. The main guy used to be dumb back in middle school. Encouraged and helped by the hot tutoring school teacher that he had a crush on, he managed to get in a good high school. Just when he wanted to say thank you to her (and hopefully became her friend), she was gone from the tutoring school. He tracked her down and found her shutting herself off in a dark house. She appeared to be allergic to sun light and had a desirefor sucking blood. He began routinely visiting her and offering her his shoulder to bite and suck on. Very sweet very happy. As he got closer and closer to her, little by little, he began to see the tragic event that turned her into a “vampire”. Will she be able to accept his feeling and move on from her dark past?

Warning: some people might find this manga inappropriate, or even disturbing because the main guy is only 15 and our beloved hot lady is 29. And yes, there are some sexual contents. If that bother you, skip this one. If you like less conventional romance, this might be for you.

Characters: the main guy (15), hot lady (vampire?), neighbor college girl, the cute girl who sits next to the main guy.

And yes, the two other girls like the main guy. No, it is not a harem because the main guy is fairly certain about his feeling for the heroine (thanks god) despite the age gap and the fact that she is a little broken. They do share lots of sweet and happy memory. The main conflict is that despite how she appears on the outside (smiling, lots of love), deep down inside, she has a hard time moving on from her past and her late husband, and the main guy is unsure about how to confront her on these issues. He wants to support her and show that he is no longer a kid but she remains doubtful, insecure and afraid, or maybe she simply does not think she deserves it. She smiles anyway because she is an adult, which makes the manga a comedy.

As for the tragic event, the manga actually never has a direct narration of the entire event. There are pieces here and there: magazine articles, rumors, an old diary, fragments of her memory from as early as her college days, etc. At the beginning, it looks like the event was simply theft that went wrong, but it was more than that. You can say that in some sense it was her kindness and unconditional trust for her late husband (who was a jerk) that led to the tragedy. That was why she felt guilty for that.

But you know, this manga is a comedy. There is lots of happiness. All those dark stuffs happen under the surface. That is what makes this manga interesting.