For me it is Shanoa. Everything dropped fast for Soma and the whippers, but Shanoa... Finally got my first Lapiste two days ago and and still haven't see Death's Robe or Robe D. Just got Globus and still no dextro custos despite many, many ch 10 hard purple chest runs. Also, haven't gotten whatever you call the spell from chapter 11. My son has had the opposite problem. He can't get anything to drop for Soma. So, who did you guys have the most frustrating grind with?
Hands down, the hardest character for me to hunt with is Jonathan--Retro gear hunting gets pretty annoying. If you mean the longest, most disappointing hunt, the 626 runs I spent going for a Miser Ring as Berserker Simon would have to work for me.
Also, the glyph you want for Shanoa from chapter 11 is called Luminatio. Keep going for the purple chests in chapter 10. That Dextro Custos will come out eventually.
"The things I do for love..." - Courage, The Cowardly Dog GT: PC20XX
All my characters are being stubborn when it comes to getting gear. Seems like everytime I go try to go for anything, the good stuff eludes me. At least it allowed me to max out the damage for the 1 miser ring I was lucky enough to get.
Overall it was the whippers. Got Simon's Cloak and the Retro Cloak easily enough but the other pieces and Fuma's set wanted to be stubborn. Fortunately I didn't have to deal with any duplicates.
Minerva Mail was a three-hundred run pain but I was also still just playing Shanoa because it was fun so it wasn't that bad. The first Valmanway +1 and Yasutsuna +1 were well into four-hundred runs also.