The grandson of Ojisan, who lives with his grandparents. He meets Alpha at age nine and she quickly takes to him as if he were a younger brother. He is the first character in the series to meet the Misago. As he grows up, Takahiro becomes fascinated with engines of all types and eventually moves away in his mid-teens to work with Nai.

Set hundreds of years in the future after an environmental catastrophe, Yokohama Kaidashi Kikou (also known as Yokohama Shopping Log) centers on the simple life of Alpha, an android who runs a small coffee shop in coastal Japan. Alpha stands witness to chronicle the end of humanity’s days with coffee, a slice of watermelon, and the sound of her moon guitar backed by distant seagulls. Quiet and bittersweet, this tale is about the melancholy beauty that can be found even as the end approaches.
 
(Source: Seven Seas Entertainment)

This is not so much a story as it is a slice of life. Or rather, it is a look into portions of the life of a girl named Alpha, together with the people around her. Alpha runs a little cafe on the outskirts of Yokohama. There are almost no customers, but Alpha does not mind at all since she has the occasional company of the old man who runs the gasoline stand down the road, as well as that of his grandson Takahiro. This is a Yokohama of the future, when the sea covers most of the land and roads have disappeared under sand or water. Alpha is in fact a robot, looking after the cafe during her owner's indefinite leave of absence. 
(Source: AniDB)

In the near-future Japan, global warming has brought the large city Yokohama underwater, and only the hills remain above the ocean surface. What used to be one of the largest cities in Japan now feels like a small town. Basically, the existence of the island country itself has been threatened. However, there is no feeling of desperation, devastation, nor hopelessness. People are enjoying laid-back lives, and they seem to appreciate each other's company, enjoying the quiet and peaceful time together. 
This is especially so with Alpha, a carefree young woman who runs a cafe, named Cafe Alpha. She enjoys her life immersing herself in the beautiful nature all around her. There is nothing more precious to her than spending quality time with her kind friends. Oh, the fulfillment and the joy she finds in life... it all indicates her to be a compassionate human being, but she is not quite a human. She is actually a type A7M2 robot. 
One day, upon hearing a radio forecast warning an approaching typhoon, her old friend who lives close by invites her to the gas station he runs, worried that her old cafe may not withstand the typhoon. Indeed, the passing of typhoon leaves Alpha with her cafe severely damaged. That's when she decides to go on a journey to raise money to rebuild her cafe, and also to see the outside world away from her friends and the comfort of a peaceful life. 
(Source: AniDB)

__Height:__ 162 cm
__Hobbies and abilities:__ drums, guitar, singing, dancing, painting

__[Website](http://www.toyonaga.info/) | [Blog](http://ameblo.jp/tossy-t/) | [Web Diary](http://set.cocolog-nifty.com/toshi/) | [Twitter](https://twitter.com/TossuiKUN) | [Anison](http://anison.info/data/person/16256.html) | [Super Eccentric Theater](http://www.set1979.com/member/%E8%B1%8A%E6%B0%B8-%E5%88%A9%E8%A1%8C/) | [Facebook](https://www.facebook.com/toshiyuki.toyonaga.9) | [Wiki (jp)](https://ja.wikipedia.org/wiki/豊永利行)__

He is a Japanese voice actor, actor, singer, songwriter and composer (under T. Toyonaga), and has ranked 7th nationally in the drummania rankings. He is currently affiliated with Super Eccentric Theater INC.

Non-anime roles:
~! Kachiroh Kato in "Musical Tennis no Oujisama: Dream Live 2nd" (Musical)
Kachiroh Kato in "Musical Tennis no Oujisama: Dream Live 3rd" (Musical)
Kachiroh Kato in "Musical Tennis no Oujisama: Side Fudomine in winter ~special match~ 2004-2005" (Musical)
Kachiroh Kato in "Musical Tennis no Oujisama: Side Yamabuki feat. St. Rudolph in winter 2004-2005" (Musical)
Kachiroh Kato in "Musical Tennis no Oujisama: The Imperial Match in winter 2005-2006 " (Musical)
Kachiroh Kato in "Musical Tennis no Oujisama: The Imperial Match" (Musical)
Kachiroh Kato in "Prince of Tennis Musical 2" (play)
Kachiroh Kato in "Prince of Tennis Musical 3" (play)
Kachiroh Kato in "Prince of Tennis Musical" (play)
Kachiroh Kato in "Prince of Tennis: Dream Live 1st" (concert/play)
Kaede Okumura in "Prince of Stride" (VG) (Japanese)
Kei Percival in "Caladrius" (VG) (Japanese)
Mikado Ryūgamine in "Durarara!! 3way standoff" (VG/PSP) (Japanese)
Mine Ryutaroh's friend in "Nodame Cantabile" (TV series)
Random person typing back to 731 in "Densha Otoko" (TV series)
Shota Hikasa in "Battle Royale II" (movie)
Sousei Tachibana in "Yumeiro Cast" (VG) (Japanese)
Xiba in "Soul Calibur V" (VG/PS3,Xbox 360) (Japanese)
Jiaoqiu in "Honkai: Star Rail (VG) (Japanese !~