Here’s the quickest reliable route: Chapter 5 has 19 pink coins total, spread across the Garden, Cliffs, Castle East/Under, Castle West, and Castle Top areas.

Fast route

  1. Garden : collect coins 1–4 first, starting from the Hopschef and shrine-area routes.
  1. Cliffs : grab coins 5–8 next, especially around First Climb, the shop, and Netskie Climb.
  1. Castle East / Under : pick up coins 9–15 around the Mysterious Puzzle, Foyer, cafe, and underground soldier section.
  1. Castle West : take coins 16–17 from the left grass-stair path in the Foyer.
  1. Castle Top : finish with coins 18–19 near Green’s Shop and the Pink Door.

Specific location notes

  • Garden coins are clustered near the starting routes, including the Hopschef side, shrine side, and the end of the Garden.
  • Cliff coins require some climbing and 2D traversal, with one near the shop and another by the Netskie climb route.
  • Castle coins are the most spread out, with several in the Foyer, one by the cafe, and others tied to the underground soldier area.
  • The final coin is tied to the Pink Door at the castle top.

What players are using it for

These pink coins are used to buy the Mystery Key and other secret-boss related items in Chapter 5. Some guides also describe them as “P dollars,” and most route them in the order above for convenience.

Quick map by area

[1] [1] [1] [1] [1]
AreaCoins
Garden1–4
Cliffs5–8
Castle East / Under9–15
Castle West16–17
Castle Top18–19
TL;DR: start in **Garden** , sweep **Cliffs** , then clear **Castle East/Under** , **Castle West** , and **Castle Top** for all 19 pink coins.