fairy chest never give anything

[Bobjams]

am I missing something because 90% of the time i do a fairy chest I dont get anything other than those red shards I dont have all the runes so I get really mad when i open 10 chests in a row and get nothing.

[Derpykat5]

You might have to open fairy chests in a higher level area.

[Tetsuya_Kurogane]

And different NG+ cycle.
To have Rune at Lvl 1-2-3
This come from the Soul Shop. At some point you will need a lots of this red Aether. Those challenge are also one of the rare way to get those, so enjoy the puzzle.

[Nimafor]

The way it works is that each chest has hidden lvl to them so let's break it down a bit.

Just like for equipment, runes have a hidden minimum requirement level of the chest to even have the possibility to give a rune. (and for example: lifesteal rune lvl 2 has a lower chest lvl requirement than lifesteal rune lvl 3)

So what affects the level of the chests then? Well there are 2 things.

#1 The thread: Just like enemies scale in level so does the chests with each increasing thread(thread=ng+ mode).
#2: The biome: The chests in the first biome will be lower level than the chests in later biomes.

So if your chests only give red aether everytime then there are 2 explanations.
Either you'll need to level up "Runic Horizons" in the soul shop to allow runes to reach a higher lvl because your runes are currently at max level. Or your chests are to low to meet the minimum requirement and you need to progress further into the game.