@Serela: Tbh I kinda disagree, both about Minoriko and about Kokoro^^
As far as Minoriko goes, you're really overrating her tanking ability. Sure, 18% HP regen per turn is nice, but Minoriko's bulk is awful compared to other tanks such as Renko or Ran. Moreover, as a tank, you need to do some serious support in order not to be dead weight - "not dying" is something any tank can do, so that alone can't win her a slot. As far as I can see, Minoriko does the following things, not counting subclasses (which any other tank could get):
- Symbol of Harvest (bonus dmg vs Plant enemies): cute I guess, but not something I'd consider slotting her for.
- Ability to Control Harvest (+8% Magic to all party members every time Minoriko takes a turn): now this is something I'd consider Minoriko for, but the fact is, there are a lot other good buffing tanks which can do much more (Renko, Ran, Keine, etc.) or that are just plain bulkier (Renko again, Rinnosuke, etc.)
- Healing + defensive buffing: this is probably the first thing you can think of when considering Minoriko. Unlike LoT1, however (where Reimu was the only viable AoE healer), LoT2 has several other options, such as Rumia (which, if awakened, can be slotted anywhere even w/o T9 members) and Maribel (who is just a little bit OP as you know too^^)
Now, this may appear like a good package, but the fact is that (1) it's tied to Minoriko's meh bulk (even from the magical side, her low HP count hurts), (2) there are other tanks which can regenerate while supporting the team (such as Renko or Byakuren), and most importantly (3) you don't even
need more than 1 or 2 tanks in your team of 12. TBH, the only team I'd consider slotting Minoriko in would be the Yakumo family, since it has two powerful magical users and Yukari's skill can help increasing Minoriko's pathetic physical bulk. But even then, there are other options which are equally valid and not as dependent on somebody else's ability to work... and as mentioned before, Ran can also function pretty well as a tank by herself, freeing a slot for another nuke such as Nitori, Miko etc. In short, Minoriko is not bad, but can't do the various broken things the really good tanks can do (such as mass buffing to all stats, quick switches, no-selling just about any attack with high defenses and/or evasion, etc.)
As for Kokoro... I was sceptical too, at first - heck, when I reached 24F I was looking for Koishi, I recruited Kokoro just along the way^^ But after I noticed her synergy with Miko, I decided to give her a try and, well... she's much better than she looks:
1) Her offensive stats are not as bad as you make them to be - they're around Suwako's level of power when you factor the faster level growth. Sure, Suwako gets a +32% to all stats from kinship, but Kokoro still gets a static +25% to ATK/MAG after just two Concentrations, and gives a further +10% to her allies while also lowering the opponents' own defenses (which may be lower than in the main game but are still considerable).
2) Her attacks are actually quite good, and can work both for clearing trash and for bosses. Against trash, you can spam The Man of Qi Worries
About the Earth, which has actually a good multiplier (assuming Kokoro's MAG ends roughly as half her ATK, that's the equivalent of a 195% ATK - 70% MND attack, which is good enough for random encounters). This is especially true when you can start using equipments which boost all stats, such as Machine God Lucifer, as well as gems and tomes to increase both stats.
3) Invigorated Kagura Lion may be her only way of increasing her Fighting Spirit counter, but it's still a pretty damn good way to do so. 255% ATK - 72% DEF is a good multiplier for an attacking move, especially when you consider how accurate it is (ACC +48) and the fact it debuffs DEF/MND too once you enable her Mask (Anger). Once her Fighting Spirit is maxxed out, she deals +25% damage on top of the previous buffs, making her actually even more powerful than several kinship boosted attackers like Suwako. Also, unlike Suwako or Chen, Kokoro has the bulk to stay out (and can actually heal herself by spamming fast Concentrations).
I still am not too sure about which subclass suits her best, besides the single-char ones (I'd go either with Warrior/Sorcerer, or with Transcendent if you got buff support), but the point is - as an attacker, she got enough variety and durability to serve well both vs bosses and vs randoms.
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Now... could somebody answer my query about the Endless Corridor too, please? :-)
Also, a question of "strategy" about the Endless Corridor. As far as I understood, the corridor in its current state ends at 100F. What happens once you complete 100F? Does it "loop" back to 100F or are you sent out forcibly? I'm asking because I want several of the items I would need dust to buy. Also, are the items you obtain from chests and enemies better as the floor counter increases, or can I just farm 1F to obtain the stuff I need (such as Infinity Gems)?