It is a mobile action RPG, Dragalia Lost.
We help someone become an idol:
https://dragalialost.wiki/w/A_Crescendo_of_Courage
We help with a cooking competition:
https://dragalialost.wiki/w/A_Dash_of_Disaster
We pretend to be Phoenix Wright:
https://dragalialost.wiki/w/A_Dazzling_Defense
And the overall plot is a save the world plot.
My bracket looked like random picks compared to his.
Congrats to azuarc for winning the GotD 2020 Guru Contest!