This guide studies the mysterious, silent but happy member of the Arius Squad: Hakari Atsuko.
Pictures (along with credits to artists) are included.
Her expression is the opposite of the Arius Squad (you will see why).
Game: Blue Archive.

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⡼⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⡾⠁⠀⢀⡎⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣴⣿⠁⠀⢠⣾⠀⠀⠀⡄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣼⣿⠃⠀⢠⣾⡇⠀⠀⣼⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⣿⣿⣃⡀⣰⣿⡿⠀⠀⣸⡿⠀⠀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠘⢛⣹⣿⣯⣍⣁⠀⠈⠙⠋⠉⢳⣤⣠⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⢀⣤⣾⣿⣿⣿⣿⣿⣿⣿⣦⣄⠀⠀⠈⠻⠁⢸⣦⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⣠⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣦⡀⠀⠀⠸⣿⢻⣷⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣄⠀⠀⠈⠀⣿⣿⣆⠀⠀⠀⠀⠀⠀
⠀⠀⠀⢀⣼⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣦⡀⠀⠀⠘⣿⣿⣆⠀⠀⠀⠀⠀
⠀⠀⠀⢸⣿⣿⡿⠿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣶⣸⣿⣿⡆⠀⠀⠀⠀
⠀⠀⠀⣸⣿⣿⡇⠀⠀⠙⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡿⠟⠃⠀⠀⠙⠻⣿⣿⡇⠀⠀⠀⠀[Arius Squad Logo]
⠀⢀⣴⣿⣿⣿⠇⠀⠀⠀⠈⣿⣿⣿⣿⣿⣿⣿⣿⠿⠛⢋⣷⣤⣀⣀⣀⡀⠀⠘⣿⡇⠀⠀⠀⠀
⠀⠀⣿⣿⣿⣿⡀⠀⠀⠀⠀⠸⣿⣿⣿⡏⠉⢀⡤⠀⣤⢄⠀⠀⠈⠹⣿⢣⠀⠀⣿⣶⣦⣄⡀⠀
⠀⠀⢸⣿⣿⣿⣷⣤⣀⠀⠀⢠⣿⣿⣿⠃⠀⢸⠁⠰⢄⣾⠀⢀⡀⠀⠘⠿⡷⠀⢸⣿⣿⣿⣿⠆
⠀⢠⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠃⠀⣠⣾⣿⣿⣿⣿⠀⣸⣿⣦⡀⠀⡇⠀⢈⣿⣿⣿⠁⠀
⠀⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠀⠀⠉⠀⢹⣿⣿⡇⢰⣿⣿⣿⣇⢰⢫⠁⣼⣿⣿⡇⠀⠀
⢰⡿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⡟⠋⢙⣄⣠⣶⣤⣝⡛⣥⣾⣿⣿⣿⣿⢽⠋⠼⠿⡿⠟⠁⠀⠀
⢸⡇⣿⡇⣿⣿⣧⢻⣿⢿⣼⣻⡇⠀⣼⣿⣿⣿⣤⣛⣿⣧⣿⣿⣿⣤⣼⣿⣿⣿⣧⣄⠀⠀⠀⠀
⠀⠀⠉⠉⠉⠙⠋⠙⠃⠘⠛⠘⠉⢸⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⠿⠓⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠙⠛⠛⠻⢿⣿⣿⣿⣿⣿⠿⠿⡿⠿⠿⠋⠁⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠙⠛⠛⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀