These episodes are two to three minutes long each. There are two male leads: lead A is a doctor at a hospital who hasn't seen or met lead B for eight years. A and B used to be great "friends" (the rainbows are everywhere) until B suddenly disappeared without a trace. When they meet again, A isn't very interested in B's why behind the disappearance because he's so upset. But of course they gradually figure it out, and with them, you figure out what happened as well.
The actors were great, although I'd not seen them in anything else before. The music was mostly not there, but i think everyone will recognize the karaoke song. The storyline had some holes i wish they'd filled. I wish this was a 6 hour long series, and preferably without the censorship.
I don't consider this a spoiler, but a necessity: it has a happy ending.