we’ve been hard at work with our friends and colleagues Youtubers, namely Mystic7 and Reversal and we’re proud to bring you this discovery:

Name your Eevee Sakura => You get an Espeon

Name your Eevee Tamao => You get an Umbreon

This info is verified, used and confirmed. We tried numerous different combinations, but these are the only ones that work! Enjoy and happy hunting!