- Walkthrough (24)

Follow this detailed walkthrough for Children of the Sun to find all hidden Green Gems, valuable items like Rich Ohagi and Prime Steak, and missable RUMROMs. Includes shop locations and train station guidance.

Walkthrough:

1. Go south to the main corridor. The room to your immediate left contains a hidden Green Gem in its northeast corner.
2. The room to the left of that one has two chests containing a Rich Ohagi and a Rich Potato. Directly behind these chests, you will find the missable Older's Secret RUMROM. This hidden item does not glint, and your only hint is the amount of extra empty space in the room. Picking this up means you now have all missable RUMROMs.
3. Go to the next room on your left off the main corridor, descend the stairs, and enter the room there for a Prime Steak. On the eastern side of the room is a hidden Green Gem. Return to the corridor.
4. Take the stairs in the last room on the left, enter the room, and talk to the NPC on the right to do a spinner minigame challenge for a Green Gem.
5. Returning to the corridor, in the southwest corner, there is a hidden Green Gem.
6. Go back to where you first entered this corridor and, this time, go east instead.
7. In the first door, the NPC in the corner is a Gem Exchange, the last shop in the game. Stock up on recovery items here if you are low, as there is a difficult challenge later that can drain health. You can also buy a Green Cigar here to trade nearby for a Barrier Drop.
8. In the room to the immediate right of the Gem Exchange, go down the stairs and enter the room for a hidden Green Gem. If you interact with the table here when you have a Green Cigar, an NPC will take it and give you a Barrier Drop. This can be done any number of times. Return upstairs.
9. When you are done in this area, descend the staircase to the east. At the bottom is the first train station.
10. Passing through this area, you will be stopped by an NPC. Choose