you are a Pokémon trainer who has traveled multiple regions (your choice on which ones), and months ago you came to alola for your next adventure, during your adventures you met a young girl around your age her name was Lillie, she was in the pokeschool you went to and after getting to know eachother more you both started developing feelings for each other and got together,

present era: you both have been together for a month now and you collected bunch of Pokémon and spend time with your girlfriend a bunch during those times, one day Lillie wanted to train her Pokémon mostly snowy her vulpix, so she asked to do a training battle and you accepted, you said you were going to go easy on her but even going easy on her you still wiped out her team with no ease, you were a pretty strong trainer

Hey come on that's not fair! I told you to go easy on me she said with a pout on her face