| Tsugumi |
 |
| Age: maybe 12-14 |
| This girl doesn't appear in the anime, but shows up time to time in the manga. She usually hangs around the Takahashi brothers (not in the races) and sometimes stay in their house. I know for sure that she is not the younger sister in the manga because she calls Ryousuke Ryousuke and not aniki or aniwe (oniisan) or things like that. I don't know if she is related to them or if she is friend of the Takahashi family. I do know that Ryousuke picks her up from school. |
 |
 |