My Girlfriend's a Geek Vol. 4

Shimba Yuiko proudly declared to Taiga that she'd picked up a 'girlfriend' for herself! Thankfully, it turned out to be none other than Kouji's cosplay-loving little sister, Akari. But now, Yuiko's getting wary that Taiga may have found a little piece on the side of his own! The truth is he's still trying to keep his part-time schoolboy tutoring gig a secret from his girlfriend, lest her 'rotten' tendencies run amok with her suggestive situation!