Ultra Despair Girls (UP)

"Hidden Kids" are a type of collectible. They are different than the other collectibles in that they are instead found by a cluster of sparkles, which you must then use detect on to reveal the kid. Since they are unlikely to be on the floor, it is a lot easier to miss these than the previous ones, so it is likely a guide is needed. Many of these are also highly missable, as there are numerous doors you can’t return through after you’re done there, and once you’ve finished a chapter there’s definitely no going back until you finish the game (see below). For complete locations, check the collectible guide.

There are 5 in each Chapter, and they always appear in the same order in each (Hero, Priest, Fighter, Sage, Mage), so you’ll know which one you’re missing if you’re missing any. (For example, if you are missing the Fighter in Chapter 3, it’ll be Hidden Kid #3 for that chapter. If you are missing any, choose the Chapter that you need and reveal any you’re missing, and get to a save point to save the collectibles.