Artist's commentary
Piko-chan's Guild Weapon
This is Piko in the Grand Admiral's armor, as pictured on page 34 of volume 2. The design is different than that of Sigatella-san's. The lower part of Siga-san's is a gear, and the helmet's pattern is a skeleton. Piko-chan's has a heart. Piko-chan is overwhelmingly cuter.
The second and third illustrations here are of Azuma from Sekai Oni in her half-human, half-demon form.