A typical morning at the Toujou household: the succubus Maria yet again sets up a misunderstanding between Basara and Mio, not ending so well for Basara. Yuki is unperturbed by all of this though. And the day at school continues to put Basara into compromising situations, ending up in nurse Hasegawa Chisato's infirmary. Back at home the mischievous Maria begins the preparations for Mio's birthday...

— written by foo2

Note: Bundled with the limited edition of the manga's 7th volume.

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Parent story: Shinmai Maou no Testament Burst