>>30744915That's a good nature for Rockruff then. Assuming you've completed the main story, you're gonna want to EV train it now. You can safely assume that you'll want to max attack and speed EVs.
http://www.ign.com/wikis/pokemon-sun-pokemon-moon/How_to_EV_Train_in_Pokemon_Sun_and_MoonTake a look at the "EV-Enhancing Items" section and the "initiating an SOS battle" section. They'll tell you what you need to know to EV train your poke pretty quickly. Just be sure not to battle with or battle a pokemon with it in your party with exp share on until you've completed EV training it.
One thing, though: are you Sun or Moon? Because Lycanroc-Moon is kinda shit but Lycanroc-Sun has a good niche. If you're moon, then once it's EV trained, you may wanna hold off on evolving it and trade it to someone you trust with Sun to evolve it then give it back to you.