1 Unbound rune?What a joke

Event Period: August 24th – August 30th

Details:

a) Click Start Trial to select the correct hand seals for each given Ninjutsu.

b) Select the correct hand seals of Ninjutsu to successfully fini*! If you fail one of the hand seals, you will have to restart from scratch!

c) Complete the trial by completing a total of 3 different Ninjutsu.

d) Get rewards after completing the trial, after you claim rewards, you can no longer claim rewards for a given day.

e) Rewards can only be claimed once daily.

e) Players can get as rewards:

Coins; Unbound Rune*1; Medium Refine Rune*1; Magatama Lv.3 Pack

It say it here-Unbound rune 1