Nobody's talking about this one because it was locked behind a Blu-ray purchase in 2015. That's the only reason. What you get is twenty minutes of the exact thing the show does best: watching people who genuinely like each other exist in the same space, no manufactured drama required. The romance lands because it's built on actual affection, not meet-cute mechanics. You watch a couple already comfortable with each other, and that comfort becomes the entire point. It's the kind of special that makes you wish the whole series could just be people drinking tea in that weird house, being quietly happy together.
The Kawai Complex Guide to Manors and Hostel Behavior: First Time is a single special episode from 2015, a companion to the Bokura wa Minna Kawaisou series. It never aired on television and was instead included with the seventh Blu-ray and DVD volume of the show. Like the series it comes from, it blends comedy, romance and slice-of-life storytelling.