Shirushi (印)/guide

Bandage (ほうたい)
Enter the dark gray door. Navigate your way to the green statue. In the hallway you're taken to, go straight up and enter the doorway on your left. Interact with the bandaged circle.

Tiger (とら)
Enter the blue door. Go up a little bit and right. Go between the three small rocks and large stone pictured to the right. Interact with the can. Go right then go through the doorway. Go right and up and interact with the cat.

Chikuwa (ちくわ)
From where you get the Ice Pick effect, go north-east and go between two icebergs. Go down and between two more icebergs. Go north-east and find a wall with a light blue tile on its bottom row.

Interacting with this tile will teleport you to another maze-like area. Find and interact with an icecube. Go down until you see several white sticks in the ground, then go left and interact with the nail. Interact with the chikuwa.

Ice Pick (あいすぴっく)
Enter the dark gray door. Navigate your way to the purple statue. From where you're teleported, keep going up until you reach the Ice World. Go north-west and interact with the pick in the ground.

Flute (フルート)
Enter the green door. Go south-east and between two trees. Enter the building north of you. Go left, down the hallway and enter the door. Interact with the NPC on the couch.

Sarafan (サラファン)
Enter the white door. Navigate your way south-east and enter the door. Leave the snow-fort. Go roughly south-east and enter the snow-house to the bottom-right of a snow-mound. Interact with the snowman wearing a coat.

Sailor (すいへい)
Enter the blue door. Go south-west and between the three small rocks and large stone (as pictured above). Take the north path. Go north and go between the two small rocks on the right side of the screen. Go down the path to the next area.

Go up the ladder on the top-right of the area. Go left and interact with the sailor.

Mochi (もち)
Enter the white door. Navigate your way south-east and enter the door. Leave the snow-fort. Go south-east and interact with the blue ball. Go south-east and find/interact with the grey NPC.

Ending
Collect all of the effects and go to the Nexus. Interact with the orb and select the first option. Go back to sleep and enter the new door in the Nexus. Go north.