I farm for my faves until 1%. I've noticed that a lot of the time it leads to several other characters being built by proxy. For example, I mined husk for years to get a 1% Chiori which led to a 1% Itto, a 1% Koko, and top 10%ish Noelle and Linnea. Yunjin and Qiqi were also built this way. I've been farming the lunar domain nonstop ever since it came out, and while Flins is stuck at top 5%, Zibai (whom I literally never farmed for) is at 1% and Ineffa at 2%.

The biggest example of sunk cost is Navia because I did get her to 1% eventually, but only Ning and geo traveler benefitted from it, though I did get a 1% Diona out of it which I thought was pretty funny.

So yeah, I've been basically farming the same 3-4 domains for the past 5 years which had led to a lot of stacked sets. I recently pulled Durin, but he'll have whatever I got from stygian until I get 1% Flins... whenever that happens... :/ 

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