>>14685818Ori 2 would be the best choice. But besides it...
Well, I can't say Momodora and Lodoss are good games. Especially the second one, too ridiculous and tedious. Touhou Luna Nights would be better. Maybe also Bloodstained or new Metroid.
Hollow Knight is good, but it would probably be too dark (and difficult) for Kiara. So are Ender Lilies and Blasphemous.
Personally, I love Iconoclasts, it has a fascinating plot and good characters, it's like watching an anime. But this game is pretty long and contains a lot of puzzles.
SteamWorld Dig and Yoku's Island Express might work well. They are positive and meditative, and can be combined with zatsudans.
But most of all I would like to see Rabi Ribi. It's got pretty laconic pixel art, but it's really fun, bright, and there's a lot of cute girls. And one of the best metroidvania in terms of gameplay and gamedesign. But its developer is from Taiwan...