"""Cruncyroll Anime Nights is proud to bring you a brand new animated film from South Korea! After summer vacation, So-ri transfers to a new school and finds an anonymous letter in her desk drawer with an introduction to the school and a clue to finding the next letter."If you want to keep reading, find my second letter!"While following the clues in the letters and searching all over the school like on a treasure hunt, So-ri keeps running into a same-aged student named Dong-soon.So-ri and Dong-soon quickly become friends as they search for the letters together.As she finds one letter after another, the special connection continues, and So-ri's curiosity grows for the mysterious sender."I want to find the last letter and thank you in person.""""

GENRE: Animation
MPAA RATING: No Rating
RUN TIME: 1h 37m
RELEASE DATE: August 17, 2026
STARRING: Soo-Hyun Lee, Seung-woo Min, Nam Doh-hyeong, Min-ju Kim
DIRECTOR(S): Youngwan Kim
PRODUCER(S):
WRITER(S): Jeong Eun-kyeong
STUDIO: Sony Pictures