大提督の鎧のピコちゃん。2巻の34ページに描かれていました。シガテラさんとはデザインが違いますね。シガさんは下半身は歯車になっていて兜の模様が骸骨。ピコちゃんはハートマーク。ピコちゃんの方が圧倒的に可愛いです。2枚目3枚目は世界鬼の半人半鬼バージョンのあづまです。

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.