Sierra

Sierra, a 19-year old girl who acts in JianHao Tan's youtube videos, including Class T1T5.

She has a nice personality and is really quirky. She is usually seen hanging out with JianHao, Juhi or Vincent.

In one video, Vincent acted as her father and June as her mother. June and Vincent's last scene in where they "have sex." Sierra walks in on them and turns on the light as they are doing it. After that Vincent says for her to order room service and says a bunch of things to get her to go away, such as "I up your allowance."

Overall, Sierra is a minor-major in JianHao Tan's YouTube series