What is this I don't even

While I was killing dark beasts, another dude was there and he told me to use turmoil and ppots. I said I didn't need to because I had time. (Isn't that why people use turmoil; to speed up killing?) He then said, "Otp costs absolut** nothing". Wth does otp mean? Overload turmoil prayer? Oh that puss? One true pairing?

ION, the cape front is looking on target. Mining getting finished in 74 days (50k exp per day) and slayer in 84 days (36k exp per day; might speed up with putting lamps/dragonkin lamps, PP and TI into it). I've already picked out where I want to get the final mining level up and the slayer one will likely be at the jade vine.