The song is Summer High Tension..
The pairing is Rei x Nagisa :o
Trivia! Can anyone tell me what this song is? "The unexpected invitation I received (Let’s find out! Let’s practice!) Please make sure to take care of your responsibilities properly “Just leave it to me!”
The first person to give the right answer gets 2 cookies! :D
Bonus points if you can tell me the duo that sang the song ;3
-This is one of my favorite songs..-