She is voiced by Yui Aragaki in the Japanese Version and Colleen O'Shaughnessey in the English Version.
At eighteen years of age, she is the oldest member of the group, compared to Marcus Damon and Thomas H. Norstein, who are both fourteen years old. Yoshi is independent and sees herself as an older sister figure to her two teammates.
Despite her mature demeanor, she hides a terrible burden from her childhood and because of it, she has difficulty believing in her ability to do anything. When she was younger, Yoshino dealt with a severe inferiority complex which stems from being unable to be as good as her sisters at anything (the most noteworthy incident was a piano recital). As a result, years later, she still secretly worried about being useless to anyone.
Lalamon had been aware of her suffering for some time and helped her to overcome it. The problem is revealed as the result of a trend where Yoshi and Lalamon would have problems during battles in the early part of the series.
When the DATS Digimon had to go back to the Digital World, Yoshi and Lalamon spend their last day at an arcade but Yoshi accidentally destroys a punch game with her DNA charge.
Five years later, Yoshi works as a police officer with Miki, Megumi, and Sampson. One day, she pursues an older Kouki, who is riding a motorcycle without a helmet.
- Her English Voice Actress, Colleen O'Shaughnessey is best known voicing as Sora Takenouchi from Digimon Adventure series, Angie Hinomoto, Monitamon from Digimon Fusion, Jazz Fenton from Danny Phantom and Ino Yamanaka, Konohamaru Sarutobi from Naruto/Naruto Shippuden.