Lost in Blue (2016)

Original title: ระหว่างเราครั้งก่อน

Long story shorts.

Goy and Lee, two 12th-grade girls, are best friends who always sit next to each other in the classroom. Right on schedule, the girls' period always arrive at the same time every month, but until now. On one rainy day, Nueng, a high school student, met his classmate named Fon. They were alone in a classroom. Their secret relationship slowly develops. In a quiet tow, south of Thailand. Glowstick is a story about two best friends, Pim and Yo, who rent an apartment together. On Yo's birthday. she receives a present that awakens memories she can't seem to let go.