Your Wings will give you new passive skills and additional stats. There are three different ways to upgrade them:
1. Train Train your wings to upgrade its Stats and obtain Passive Skills. Also, you can upgrade your Wings’ skills using the Skill Upgrade Scrolls that you will find in the Honor shop.
2. Upgrade You can Upgrade the Left and Right Wings separately using Crystals. Crystals are pretty rare, but they will give you a good BR boost!
3. Appearance Did you receive a new pair of Wings that you already had? That’s great! Don’t sell them and use them to upgrade your Wing’s Appearance. You will receive a % bonus for every 5 Stars.