These aren't skipped episodes. They're what the show's been building toward permission to be, pure, unfiltered fanservice comedy that knows exactly what it is and commits harder than the main series ever could. The animation gets better when the plot gets thinner, a trade-off that lands because the timing and character voice work refuse to let you notice you're watching nothing happen. Five minutes is the perfect length to deliver the bit and leave before anyone asks for a reason.
Issei and the Occult Research Club star in a set of short comedic side stories that stand apart from the main narrative. Originally packaged with the home video release, each brief episode drops the cast into a self-contained scenario: a trip to the beach, magic lessons from Akeno, a spell that flips Koneko's personality, flashbacks to how Issei developed his Dress Break move, a penalty udon cooking session by Sona and Tsubaki, and Asia trying to prove she can be as wicked as any demon. There's no overarching plot to follow, just comedy, romance and plenty of ecchi fanservice in bite-sized pieces for fans of the cast.