Konosuba God's Blessing On This Wonderful World (Manga) Vol 05

Yunyun, Megumin's former classmate and fellow Crimson Magic Clan member, takes the stage! After saving Kazuma and Megumin from a horde of Giant Toads, she declares Megumin her rival and challenges her to a match. Later, Darkness finally returns from Alderp's manor to deliver some shocking news! Desperate for help, she decides to reveal her true identity. Who is she, and what could Alderp possibly want with her...? Yen Press
(W) Natsume Akatsuki (A/Ca) Masahito Watari