This is why I'm such an advocate for being able to work on rewards on your own time, at your own pace. Whether it's wolf collars for hellhounds (or in time, the armor and chair) or a special type of hunt book for Centurio seals that goes toward the purchase of the tiger, if I can't always get to an S rank (on account of having, you know...a job and family that come first), at least this way I can work toward it.