The start of OBS immediately reminded me of the short web drama Flat. Two high schoolers that date and a documentary shows us their relationship as they grow into adulthood.
both are two cute romantic minidramas. In both there is a couple with an older female and a younger male (although in Love Playlist said couple doesnt have any real screentime in season 1 but the following ones). They also talk about unrequited love for abit and just generally give me a similar feel
Heesooks and Taesungs relationship kind of reminded me of Flat. Theyre both younger male/older female stories where the guy has been crushing on the girl since high school. Back then it was just a one sided crush but now that the characters are older its starting to become requited. Apart from that theyre both cute short mini dramas that you can find on youtube.