A very specific topic!
To focus purely on the story without the mechanical hurdles of time limits or low resources, you can use these specific Atelier Iris 3 .pnach codes Infinite Time (In Missions) atelier+iris+3+pnach
Paste the following common codes into the file (remove the // at the start of a line to enable that specific cheat): A very specific topic
// Iris Max HP (9999) patch=1,EE,10A5356C,extended,0000270F atelier+iris+3+pnach