A Letter of Challenge

you get a mysterious letter of challenge! who could it be from...? ~ A LETTER OF CHALLENGE is a battle game (?) & visual novel where you play as a magical girl (with a magical guardian, of course!). you're heading home from school one day when you get a mysterious letter... find out who sent it and why! play time is ~20 minutes. this game was made for summer slow jams june 2020: turn-based games.