Talk:Unit Leveling:15/@comment-25971902-20150412083153/@comment-99.248.130.214-20150419221948

actually, i have a 6 star sibyl sister and it had base 15, so... not sure if bug, but yeah. can't say that "any base 15 unit with a 6 star form turns into base 21 upon evolution to 6*" since it just happened..

also, my Sorrow Sibyl Eliza from 74 I fused a water crystal and she turned 82 with 8630 till the next level. A Water Crystal gives "When fused with Water element units, it grants 227,286 XP, not including Great Success (x1.5) or Super Success (x2)." As I've gotten a Success, that means she receives 227286.

Now simple math: 227286 - (Exp to Level from 74 to 82) = 227286 - 32308 - 32970 - 33636 - 34307 - 34981 - 35661 - 36344 (you can stop here because the value it gives becomes negative (-12921). Note that that's only from level 74 to 81.

Also you can see from this video (it's japan, but still, they provide the same stuff anyway.) that a Level 1/100 Sorrow Sibyl Eliza has a base of 15. It's from USHI Gaming.

The information you're looking for is at 0:37

https://www.youtube.com/watch?v=XpHCIlHbGm4

Just saying, please research things yourself before assuming things... go summon a sibyl sister and do the calculation yourself. Also, I play on global.