Well, I got the sword from KQ when it was +4 ..
From +4~+6 Only 1 fail but didnt break.
At +6 , i decided to try and +7 it xD
+6~+7
First time - Lucky Xir - Failed =/ but didnt break.
Second Time - Xir - Failed didnt break again =DDD
Third time - Xir - Success !!
After +7.. I got really greedy and tried to +8 it
Normal Xir -> Failed.. didnt break again.
Then it hit me, is this sword glitched or something !! 4 Fails no breaks!! Wow thats really something !!
Anyways heres a screenshot of my sword now
Gonna try to +8 then +9 it soon !
Update : I broke that +7 Sword >__> Bought another +6 and +7'd it first try.
Gonna +8 it as soon as i get more Xir's! My goal is +9 FTW