PDP Shard of Dreams Post Game: Getting the Rainbow MagStone

So, here I'll be explaining how to get the Rainbow MagStone, which is a very, very important item for Reincarnation, so it's best to pick it up as soon as possible.

So, first thing's first, Gap to Mayohiga Inn.

Go to the left, go up the steps, and continue left. Keep going left (don't go up the next set of steps). You'll eventually get to a screen change.

This new area is quite misty. Enter the next screen change.

The grass here contains Shou, Kokoro, and Tokiko.

Continue straight to the left and pick up the Yin Yang Orb containing a Prismatic Candy. Go down a bit and go through to the next area, to the left.

Here, in the grass above you is a Yin Yang Orb containing something, but I have no idea. I checked and double-checked the wiki but there doesn't appear to be an equivalent; so it must be something new! Down below the grass is a Merchant standing around who sells Charms. His sell list is as follows:

Fish Scale Charm            Yoke Charm
Crane Wing Charm         Houen Charm
Skirmisher Charm           Scimitar Charm
Mystical Charm               Pinpoint Charm
Formation Charm            Life Charm
Healing Charm                Massage Charm
Awakening Charm          Antidote Charm
Burn Charm                     Light Charm
Relief Charm                   Courage Charm
Clarity Charm                 Cursebreak Charm
Curing Charm                 Thorn Charm
Purify Charm                  Haste Charm

The last two items on the list (the ones for 250000) appear to be new. They're definitely Charms, but have not a clue what they do. Sorry.

Anyway, take the upper left exit out of the area. ...Which isn't actually a real exit and actually just loops around to the lower area of this exact same area. Seriously, we could have just gone down past the Merchant to get to the same place, but oh well! Loops are fun!

Regardless! There's a Yin Yang Orb here containing a Fish Scale Charm. Take the nearby exit (not the one we just came from!), to your left.

In this next area, there will be some grass at the far left of the area with a Yin Yang Orb containing a Prismatic Candy. Go up the nearby steps and through to the next exit.

Go down the next set of steps, and then go left and down through some grass. Continue going down through to an exit. Go down here and pick up the Yin Yang Orb containing a Crane Wing Charm. Now head back up to the exit again. Go slightly and left to the next exit.

Go left through some grass to pick up a Yin Yang Orb containing a Mystical Charm. Now go down. Ignore where you can turn left for now, and go to the lowest exit. There's a Yin Yang Orb here containing a Life Charm. Now go up to the exit again.

Go up and take the first left to another exit.

And now you are at Kasen's House! Congratulations! There's a Jizou Statue here to give an offering to. I am almost certain that this one says it's taking  Chirei Bun, but I don't appear to have lost a Chirei Bun by making the offering. I checked a bunch of times, but no item was taken from me as far as I can tell.  

The grass here contains Byakuren, Kasen, Komachi, Reimu, and Miko.

When you're ready, enter Kasen's House, and speak with Kasen. Basically, she'll ask you to retrieve some lost items for her.

The first one is rather nearby, so we'll start there. Leave her house and exit to the right. Go up to the next exit. Go down through some grass and take the lower exit in the next area. Now go down and take the next exit (there's only one other one here besides the one you came from). This brings you to the Great Frog Pond.

Here, you can capture Suwako and Cirno. Also, there's frogs all over the place. In the top right corner of the area, near a little shrine, is even more frogs. One of these frogs is moving faster than the other frogs. Talk to that one. It will give you the Peach Hairpin.

When you're done, Gap to the Hakurei Shrine. Enter the Shrine and go to the little healing room. In here, there's a little decorative box-thing near the dresser. Interact with it and you'll have to fight Sukuna. She uses a level 65 RaikoP, 63 YatsuhashiS, 65 SukunaP, 63 SeijaS, and a level 63 BenbenP. Upon defeating her, Reimu will come and kick you both out. If needed, re-enter the Shrine and heal at the bed, then go out back behind the Shrine.

Interact with the Well back there to pick up the Dog Flute. Suika is also back here, and will fight you if you talk to her. She uses a level 68 SuikaD, level 68 SuikaEX, and a level 68 SuikaP.

Now Gap to Scarlet Devil Mansion. Now go down to Misty Lake. Go left around the lake until you get to the area with the Kappa, and go that way. Continue left and enter Forest of Magic North.

Cross the water, go left, and then down until you get to a bridge. Cross the bridge and go down. Keep going until you get to the smashable rocks that bring you to Muenzuka. Make your way through Muenzuka to the giant purple tree.

(If you need a refresher on getting through Muenzuka, please check this part here.)

Right in front of the tree is a Yin Yang Orb containing the Monkey Seat.

Now Gap to the Human Village and take the top right exit. Go right ever so slightly until you see some rocks above you. They're really, really close to the Human Village, so don't go too far. Smash the small rock, and go up there.

The first guy on the route won't fight you, but the first girl will. She uses a level 32 YumemiP. Go into the grass near her and pick up the Yin Yang Orb containing a Gold Coin. Now go up. Go right and cross the water. Go up the little set of steps, and interact with the rock to obtain a Grimoire. Cross the water again and go left. In the grass is a girl who will fight you with a level 30 NazrinS, level 30 KyoukoP, and a level 30 MomijiD. There's nothing else in the grass though, so go left down the path near it instead. There's a screen change up here.

In here, you'll see Kana Anaberal playing with a Lyrica Puppet. She will fight you with a level 63 LyricaP, level 65 KanaEX, level 63 MerlinP, and a level 63 LunasaD. After defeating her she will give you the final item for Kasen: the Hochodo Book. Up past her is a Yin Yang Orb contain Skill Card 83.

In the grass here you can capture Kotohime, Ellen, Chiyuri, Kana, Rikako, and Yumemi.

In the bottom right corner is a note to read, so do that. Now, Gap to Kasen's House (yes, it is a Gap point). Talk to Kasen and she will give you the Rainbow MagStone! Congratulations! It's a very important Reincarnation item!