Tsutomu&#039;s classmate.  He&#039;s blunt and can makes people around him uncomfortable because of what he said.  However, he is very thoughtful of his friends and has a strong sense of justice.

Tsutomu Senkawa is an average high school kid who is busy studying for his senior entrance exams. Tsutomu goes out for some fresh air, after a hard day's work studying for a big test, when he runs into a guy fleeing from a pretty young lady. The pursued man is actually an interplanetary criminal on the run from a Federation agent called Birdy Cephon Altera. Caught in the midst of this chase, Tsutomu gets thrown by the man at Birdy, which kills Tsutomu. Fortunately for Tsutomu, there is a way to keep him alive, although it comes at the price of discarding his body. He ends up merged into Birdy's body.

[Website](http://www.ddl-ltd.co.jp/asanumashintarou.html) | [Blog](http://ameblo.jp/shintaro-asanuma/)

Shintarou Asanuma is a voice actor, dramatist, producer, copywriter, and designer. He was formerly affiliated with Office Osawa and is now part of Dandelion and is best known for voicing [Watashi](https://anilist.co/character/30579/) on [The Tatami Galaxy](https://anilist.co/anime/7785/), [Takatoshi Tsuda](https://anilist.co/character/32770/) on [Seitokai Yakuindomo](https://anilist.co/anime/8675/) and [Yousuke Kirie](https://anilist.co/character/2713/) on [Bokurano](https://anilist.co/anime/1690/).

**Non-anime roles:**
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- Alex in "Street Fighter V" (VG) (Japanese)
- Avatar (Male) in "Xenoblade Chronicles X" (VG) (Japanese)
- Azai Nagamasa in "Hana Oboro ~Sengoku-den Ranki~" (VG) (Japanese)
- Clay Kaczmarek/Subject 16 in "Assassin's Creed: Revelations" (VG) (Japanese)
- Darnell Sellers in "Hospital.: 6-nin no Ishi" (VG) (Japanese)
- Juran in "Kikai Sentai Zenkaiger" (tokusatsu series) (Japanese)
- Keiji Sendai in "Nogizaka Haruka no Himitsu: Cosplay Hajimemashita" (VG) (Japanese)
- Kou Tokisaka in "Tokyo Xanadu" (PS Vita ARPG) (Japanese)
- Kusuo Saiki in "J-Stars Victory VS" (VG) (Japanese)
- Lorenzo De' Medici in "Assassin's Creed II" (VG) (Japanese)
- Lu Xun in "Romance of the Three Kingdoms 13" (VG) (Japanese)
- Nakigitsune in "Touken Ranbu" (browser game) (Japanese)
- Ryan in "Granblue Fantasy" (VG) (Japanese)
- Ryōta Kawara in "Hatoful Boyfriend" (Drama CD) (Japanese)
- Shulk in "Xenoblade" (VG) (Japanese)
- Sambaba in "Doubutsu Sentai Zyuohger" (Tokusatsu series) (Japanese)
- Wataru Inoguchi in "Getsuei no Kusari -Kyouran Moratorium-" (VG) (Japanese)
- Wataru Inoguchi in "Getsuei no Kusari -Sakuran Paranoia-" (VG) (Japanese)
- Zed in "Lollipop Chainsaw" (VG) (Japanese) 

(Source: Anime News Network) !~

He is the son of Mark and Carol Sinclair and the brother of Lauren and Graham Sinclair.

__Awards:__
- Voice Actor of the Year at 2nd Annual BTVA Anime Dub Awards (People's Choice)

Birdy and Tsutomu are still co-existing in the same body, as Birdy continues her duties as Federation Investigator and celebrity persona, and Tsutomu seeks to balance them with his normal everyday life. When a criminal group connected to the Ryunka incident escape from custody, hiding themselves and their alien identities on Earth, Birdy and Tsutomu are thrown back into action. It seems, however, that there are other forces involved, as well as old faces, which give Birdy time to reflect on the past, and the people that influenced her.
 
(Source: Anime News Network)

This OVA connects the first and second Tetsuwan Birdy DECODE seasons. 

Birdy uses her pin-up alter ego to help Tsutomu make a love connection with Sayaka, but everything goes horribly wrong when a Federation marionette is added to the equation! 
 
(Source: FUNimation)

A remake of Tetsuwan Birdy.
 
While pursuing a criminal, the pretty but reckless interplanetary police officer Birdy Cephon Altirra accidentally kills Tsutomu, an earthling high school student. To make amends, Birdy is forced to share her own body with Tsutomu's spirit so that he can continue his own life. At first, Tsutomu knows nothing about his situation but soon discovers that his body is starting to take certain actions without his mind ordering it. In times of action, Birdy takes full control of their shared body, transforming it back into her original female form.

After two years of being dormant inside Tsutomu Senkawa, an accidental encounter with their old nemesis violently wakes Birdy up. With Birdy kicking evil's ass once again, the dark secrets of the experiments conducted by the "Agni" corporation are slowly revealed. They seem to be dabbling with human body enhancement, creating what they call "beast men," to combat the alien invasions related to Birdy. 
(Source: MangaHelpers)

Ryota Sudou