Yoshiyuki is the protagonist of Da Capo II as the student of Kazemi affiliated junior high class 3-3. He is the son Sakura and Jun'ichi never had, brought into existence by the new unwilting sakura tree. His name refers to this as well as it can be taken to mean "Yoshiyuki born from within Sakura." Like Jun'ichi, Yoshiyuki can create wagashi with magic. He also appears to be able to see either the future or people's desires and dreams.

(Source: Wikipedia, edited)