A popular and good-looking guy, and unsurprisingly has a bunch of fangirls. In fact, he made the school's "Top Three Hottest Guys" for three years in a row. He lives together with Nao because of the whole renting fiasco. He's very aloof and antisocial, and gets straight A's without studying. Because he is very mature looking, he is commonly believed to be older than he looks. In Good Morning Kiss, it is stated that he looks a lot like his mother. Both of his parents died while he was still an elementary school student. He had had a big crush on Yuri for 6 years but was heartbroken when she had married his older brother despite her knowing about his crush on her. He then started to date Nao later in the story. He gets mad or jealous whenever Abe shows up out of nowhere or whenever he or any other boy hangs out with Nao. Continuing to give off the cold shoulder, he's outspoken and slowly lightens up after dating with Nao Yoshikawa. To make him confess that he liked Nao, in Chapter 15, Yuri hid Nao in her room and asked Uehara why he did not want to come home. He admitted that it was because he liked Nao, and that although his original reason for leaving home was because he was heartbroken from his older brother's marriage with Yuri, he has gotten over his crush on her and had wanted to be with Nao. Nao slipped down by accident, and he hears her. He tells her he really meant it after Yuri leaves, and does not get his feelings replied back to until Valentine's Day, when they officially become a couple. He lies about his age to get a job and has a surprisingly large appetite. In the end of the manga, he and Nao move into different apartments because the landlady of their previous apartment had a son who came back from America and had wanted to rent out a room for him and his girlfriend. When they agree, Uehara tells Nao that he wants to live alone because he wants to be more independent but tells her that they will never be apart. This ends up as a rumor that Uehara had proposed to Nao and had spread across the entire town. Uehara clarifies to Nao that he did not propose to her but wants them to still be together. When he and Nao move into their apartments, they learn that they live next door to each other because of the help of the landlady of their previous apartment and Nakatsugawa.  (source: Wikipedia)

Nao Yoshikawa stays behind to live by herself when her parents leave to inherit her grandpa's farm in the country. On the day she moves into her new apartment she soon discovers that it was rented also to Hisashi Uehara - a cute, super-cool and popular guy from her school. Not only did their housing agency unexpectedly close down, the landlord of the apartment tells them that they had to pay more for their apartment then they had expected. With both no money and no home to return to, Nao and Hisashi decide to live together as flatmates.
 
(Source: Anime News Network)
 
Contains the one-shot: Kare to Kanojo ni Hanataba wo (His and Her Fortune Bouquet) in volume 1 
Kazuya is a young model who has always had a crush on Harumi but she couldn't care less! That is until Kazuya losses his memory, does Harumi possibly harbor feelings for Kazuya?

One year has passed since Nao and Uehara accidently moved into the same apartment. Since then, they have become an official couple. With Uehara's 16th birthday coming up, Nao's biggest worry is what to buy him. Everything is going smoothly- that is, until Nao realizes Uehara's birthday has already passed and she spent it acting as a cut model for the handsome hair stylist, Asai.
 
(Source: Anime News Network)

The sequel to Good Morning Call. The series takes place a few years after GMC. Nao and Hisashi are in college and are living in across from each other in an apartment complex. When Nao's father pays a visit and learns of Hisashi he takes Nao back to her family. Hisashi realizes how much he hates being away from her and proposes.