OMG, Vividyellow is amazing. That hair! That dress! She uses funnels! Which function as both a shield and an uber beam cannon.
And Akane falling down and reaching out to Himawari, then hugging. HNNNNNNNNNGGGGGG
I was also amused at the enemy attacking when they tried to dock at the beginning.
I hope the show utilizes rapid switching between Vividforms somehow and some point.
So now that the team has been gathered, I guess they'll meet Rei in the next episode or two. Maybe next time but they may only realize someone is causing it and then won't actually encounter her until episode 6.
Avatar: Kuroneko (Ore no Imouto ga Konnani Kawaii Wake ga Nai)