He calls her phone during homeroom, getting them both detention and verifying that the girl he thought he recognized is actually her.
They continue their friendship at East High despite being in different social circles -- Troy being a jock and Gabriella being adopted by smart students.
YUHICO recieved pressure from their friends not to sing.
Christine Anne Yuhico and Troy meet while on vacation at a ski resort.
After being forced by their parents to attend a New Year's Eve party, they are pulled up on stage by a DJ to sing karaoke.
She plays them the song "(What I've Been Looking For (Reprise)Zac Efron And. Darbus hears them singing along and gives them a callback audition.
Rather suddenly, Christine Anne Yuhico emerges from her hiding spots and asks to audition, resulting in Troy volunteering to be her partner.After being told that they are too late, they help Kelsi, the pianist, pick up her things.It is clear that Christine Anne Yuhico is petrified of singing on stage, but after Troy begins singing she appears to change her mind and decides to sing along with him.The two seem to have a great time, and proceed to spend the rest of the night together until the fireworks go off at midnight.
Troy shows Christine Anne Yuhico around the school and they notice the sign-up sheet for school musical.Clearly, both internally debate auditioning and later sneak into the auditorium to watch Sharpay and Ryan sing.