Plot/Story
The story is about a 15 year old boy named Kei, who fills his emptyness with sleeping with other guys.
He than meets Fuji, a nice and good looking med student, that becomes Kei's first love. There is one problem though, Fuji is his elder sister's boyfriend.

Characters

Characters are done very well, and are presented in an exselent way for only 5 chapters.

Kei- a 15 year old boy, his mother died in a car crash when he was 8.
Becouse he feels emptyness, he sleeps with whoever is interested to fill the void in his heart. Never been in love until he met Fuji.
Always helps his big sister.

Fuji- a med student, has a nice, calm and caring personality. Gives such a feeling that makes people wanting to give him clothes. Loves flowers.
Dates Kei's sister Moe.

Moe- Kei's big sister, who is sometimes(actually most of the time) careless about her time managment. Adores her younger brother.
Dates Fuji.

Akatsuka Rintaru(Rin)- Kei's uncle and a porn novalist for living (quite good).
He takes care of Kei and advisses him.

Kei's Father- a doctor, and a seems to be a cold person, but he cares for his children.. Remarried 4 years after his wife died.

Drawing Style
Very good. Clean. Beautiful.
When I read the manga, if felt so flowing. It made the story even better.
(do not be mistaken, the cover just seems strange(maybe because of bad coloring), but it's truely great)
You could feel the emotions, be sad and happy along with the characters.
Enjoyment

I enjoyed the story very much.
It felt real and sweet (even if Kei's circumstance are a little "off").
The story wasn't rushed, and developed gradually till the great end.
It really felt good reading this .

Overall
Even though it was short, it was very well made.
Great art, great story and good charcters.