Here's the summary:
Hazuki may be near-sighted, but he knows true beauty when he sees it and the delicate form of flower shop owner Rokka draws him in like a bee to honey. So, hoping to cultivate a relationship between them, Hazuki takes a part time job at her shop, only to discover two huge thorns preventing the nurturing of any romance. The first, the fact that Rokka is still grieving for her late husband Shimao, would be enough to snip most men's ardor short, but it's the second that really threatens to make Hazuki's forlorn hopes wilt.
Because while Shimao is most definitely deceased, he hasn't yet departed and his spirit is still living in Rokka's apartment! Except only Hazuki can see him, which leads to a very strange romantic triangle indeed. Are Hazuki's chances with Rokka as dead as the man who still lives in her house? Or can he somehow make love blossom even though there's an interloper pushing up the daisies between them?

Does anyone watch this?
I stumbled upon it from its ED song, Anata ni Deawanakereba by Aimer.
I wondered with the ending song this beautiful how is the anime itself? So I googled it and BOOMM~~ It is become anime that I'm currently in love with :)
Seriously, it is so interesting. It is not like your typical romance anime with a highschooler as the main character. That's what makes it different.