Both runes are redeemable from the monthly event reward tab.
The easiest way you can get low- and medium-level refine runes is to redeem them from ranking store and group shop at the redemption merchant. They c*so drop randomly from gift packs.

You c*so get them from the shop using coupons but that's not very advisable.
This post was last edited by Kaede at 2017-6-16 17:56