He is Yuu and Daiki friend and Rae childhood friend. He is a perverted, he talks about big boobs and likes to tease Rea. He is really concerned about her and he teases her because he likes her.    (From Wikipedia)

Tsubomi Tachibana is a fifth grader dealing with rather sensitive issues such as her mother's pregnancy, her first period and the strange feelings she has started to get when she has been around boys. 
(Source: Anime News Network)

[Profile (81 Produce)](https://www.81produce.co.jp/actor_search/index.php/item?id=122) | [Profile (Columbia Music)](https://columbia.jp/miyatakouki/) | [Blog](https://ameblo.jp/miyatakouki/) | [Spotify ](https://open.spotify.com/artist/4nHBz3gMgWa3FVtEVe0muQ?autoplay=true)

Kouki Miyata is a Japanese voice actor who works for 81 Produce. He was formerly credited as Harunori Miyata (宮田始典, Miyata Harunori). He made his radio CM narration debut on 2 March 1993. He is also the Japanese dub voice of ''Phineas'' in the series ''Phineas and Ferb''

Each volume depicts a different heroine.
 
Volume 1: Main character of the story is Tachibana Tsubomi (立花つぼみ), a fifth grader dealing with issues such as her mother's pregnancy, her first period, and the strange feelings she has started to get when she has been around boys. 
Volume 2: Main character of the story is Kusakabe Tsubomi (草壁つぼみ), a fifth grader, who encounters an alien wanting to do research of earth. It turns out he has picked Tsubomi to be his research subject. 
Volume 3: Shiina Tsubomi (椎名 つぼみ) 
Volume 4: Katanashi Tsubomi (小鳥遊 つぼみ) 
Volume 5: Aizaki Tsubomi (相崎 つぼみ) 
Volume 6: Nike Tsubomi (仁家 つぼみ) 
Volume 7: Yagi Tsubomi (八木 つぼみ) 
Volume 8: Honda Tsubomi (本田 つぼみ) 
 
Note: Won the Shogakukan Manga Award for children's manga in 2009.

Futoshi Kuki