These actually take place back in Mikado, easily accessed via a Terminal. Anyways, there's not actually much to them, but here it is...
"Relic Recovery: Small Fridge:"
This one's actually for K. Anyways, you'll be waiting until Ikebukuro this one - it's right after Shinjuku, which is our next destination.
"Relic Recovery: PC:
I see Hugo favors Microsoft over Apple and Linux. Anyways, this will wait until Shinjuku.
"Relic Recovery: Power Cable:"
Another one that must wait until Shinjuku.
"Relic Recovery: Wind Turbine:"
Another one that must wait until Ikebukuro.
The aforementioned will not be found through battles, so if you begin hunting, keep it in mind to look for those relic pile-ups all over the place.
Meanwhile, in Ueno, you can find three more at the Hunter's Association.
"The Secret to Durable Clothing:"
For this, you to find one Orcus Blood. You can find them by defeating Orcus far to the north of Ueno. Go to the overworld and head north of Naraku and you'll find a hunter who can take you to Minami Senju. That's where the Orcus lies. He's not hard to beat, but hard as hell to find.
"Samurai and Hunters United:"
Similar to the above, but you must defeat Asura in the northwestern overworld map after heading to Ouji. First go to the Ambassador cave in southwestern Ameyoko Cave before leaving, though.
|30||Fury||Ice||Physical, Light, Dark||Gun, Force, Fire (Repel)|
Offensively, this boss can be a bit of a douche, in that he can use a powerful Fire-elemental party-wide spell called Maragion. It can hit for around 100 damage per Level 20 unit, and he does get two moves a turn, which kinda sucks if you or your allies are weak to Fire.
Always theorize he'll use that attack at least once and try to stay above 150 HP. This won't be a difficult one to fight, so long as you're well-supplied with Ice items or skills. Bufu should be doing about 150 damage at this point; Bufala more like 200.
If you manage to get two or three people using this, you can get in about nine hits a turn with Nozomi. That generally equates to 1,500+ damage a turn... So, yeah. You don't really have to worry about healing if that's the case.
"Hunter Tournament Prelims:"
This takes place in one of the buildings to the south/southeast of Ueno. It consists of several battles against strong demons. In general, multi-target or party-wide attacks work well; it got me through pretty well. Keep in mind that sparing your foe will up your alignment by 1, and killing him lowers it by 1.