An ambitious and easygoing inventor who created the Tomoe Drive. Deeming Shiro a perfect candidate for her experiment, she replaced his heart with it, following which the two would partner up for the Planet Redevelopment Race. Much like him, she has a keen interest in Loser King.

On Tellus, a half-explored planet inhabited by immigrant pioneers and plagued by terraforming machine-induced earthquakes known as the "Stampedes", a promising young racer named Shiro suffers life-threatening injuries while chasing after the legendary "Loser King" alongside his lifelong rival, Goodspeed. On his deathbed, he is visited by a mysterious woman calling herself Tomoe, who gives him a second chance in life in exchange for participating in The Planet Re-Development Race - an annual event where daredevil mavericks from all across the globe gather not just in pursuit of an enormous amount of prize money, but to explore what lies in the unexplored parts of the planet.
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<i>Note: An unfinished pilot version was shown at the 2009 Sapporo International Film Festival, and a preview screening of the completed pilot version was held on November 27, 2010. On January 28th, 2011, it was released on Blu-Ray and DVD.</i>

**Real Name:** Ayumi Nagashii (永椎あゆ美)
**Height:** 156 cm

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__Non-anime roles:__
Candace - Genshin Impact
Eruruu - Utawarerumono series

Tomoe Mikagura