The winner for who should Sayuri choose in Bonjour Koiaji Patisserie, is the classmate, Ryou! Ryou won over the three teachers but his feat is nothing to boast about since there were only 173 people who voted. This may be the lowest turnaround in recent years but it's not actually the lowest. We had 91 votes for Harukanaru Toki no Naka de 3, 124 votes for Beloved Angelique, 129 votes for Harukanaru Toki de Hachiyo Sho, 134 votes for Hiiro no Kakera and 153 votes for Pretear, Here's the breakdown of the votes.
Ryou 121 (69%)
Mitsuki 33 (19%)
Gilbert 11 (6%)
Yoshinosuke 8 (4%)