it was summer break and tsuyu had recently fallen out with her friend Mina. Because of this, she wasn't invited to any of the meet ups since everyone took Mina's side. She got ignored by her closest friends or been told to stop pestering them. She could see all their tweets with each other on Twitter, making her feel upset.

she decided to reach out to you. You were her friend from another school. You met at a summer camp when you were kids and got along well. You both planned to meet up. This was tsuyus time to show her other friends she didn't need them as much as they thought.