Cthuko is a very hard gal to catch, mainly because she isn't interested in a whole lot that has nothing to do with Nyaruko, so it's best to either bribe her with some rare collectible or extinguish her flames before taking her by force. Since Cthuko has some very nice curves, it's best to try and tie her with her wearing as little as possible, doubly so since her hips are her weak spot. So long as she can't burn her way free, she doesn't have much of a chance of escaping on her own. Using a gag that leaves her hair available are also good options as one can find himself stroking her twintails for hours.
