I just watched finish the anime - Midori no Hibi. It’s an okay anime. I would consider it to be a romantic comedy. I feel that anime nowadays seems to be very “multi-genre”. A successful anime is usually one that appeal to the largest crowd.

(Midori-chan.)
Midori no Hibi is literally translated as “Midori’s Days” I believe. Before I watched the anime, I actually saw the manga (comic) a little. About half the comic series roughly. I quite like the comic.
Midori is a girl who admires Seiji, a gangster from another school, at a distance. She daren’t confess her love to Seiji. One day, she becomes ill and never wakes up.
Seiji wakes up like usual and realizes he has an addition companion. In shock, he screamed. And she screamed. And I laughed. Midori appears attached to Seiji’s right hand. She has unwillingly (but much gladly) becomes Seiji’s right-hand woman.

(Midori appears on Seiji’s hand.)
Their relationship develops as Seiji protects his right hand by not retaliating the hooligans beating and Midori wearing those ‘I love Seiji’ clothes that she hand-made with love.
While on Seiji’s hands, Midori begins to understand Seiji better, seeing the kind side of him. Seiji, on the other hand, begins to know of this shy girl, and seeing the naked side of her. This anime has slight top nudity but not suggestive adult themes.
As Midori is enjoying being on Seiji’s right hand, she realizes that her other self is lying motionlessly on her bed in her house. She is affecting the people who are close to her.

(They become closer.)
Midori no Hibi is an anime to be watched casually. The romance is not strong enough. Sometimes it would seem that there are too many characters that come and go. The art work is great and the ending song is beautiful. I rate the anime 3 stars out of 5. The manga, however, scores better at 4 out of 5 with a longer and more rounded plot.