Gintama Season 3 Episode 20: Love Is a Roach Motel
Episode 20 of 51 of Gintama Season 3, aired August 18, 2015, 25 minutes. Available with English subtitles and dub where released.
Episode summary
After inviting Otae to the festival and being rejected, Kondo rampages around, taking his frustrations out on happy couples there. In an effort to hide the fact that the one making the scene is the Shinsengumi chief, Sougo and Hijikata convince him to wear a disguise. A short while later, Kondo runs into Otae, who doesn't seem to recognize him in his cockroach mask.