Both are Strongberry/Matchbox productions focusing on a same gender romance. Theyre both about high school graduates and very sweet and cute! They also came out around the same time and can be watched on youtube for free.
Both are cute korean short films that focus on the romance between two girls and end happily. The characters in both are students. 1 in 10000 belongs to a series of three short films but Act 1 can be viewed as a stand alone.