In the most recent update to Fire Emblem Warriors (3/28/18), there was an option added to the temple at the camp: Level Reset. The description says "Get materials when resetting a character to level 1." There are certainly materials that I need and characters that I don't use as much as others, so I'm considering taking this action.
But what exactly do you get for doing this? It costs 1,000,000 gold, and raising that character back up wouldn't be a walk in the park so it's not an action I would take lightly. I don't need a bunch of gold materials or random materials that I might already have a lot of. I want to make sure that if I reset my character's level, it's going to be worth it.