Prequel #3 / whatever to the main story Operation Sashimi. 

It's strongly encouraged to read that bit before this; of course, you're more than welcome to just read this instead. There'll just be some bits and pieces you might not understand if you hadn't touched the above-mentioned (: 

Part of the Operations!au. 

Main — Operation Sashimi (Kris x OC)

Prequel #1 — Operation Dimple (LayHan)

Prequel #2 — Operation Frying Pan (ChanSoo)