The episode reintroduces characters in new roles, such as Zenzou as a ninja-teacher who slips on a Justaway and Hijikata as a disciplinary officer threatening seppuku for rule-breakers.
For a look at the bizarre humor in Episode 270, check out this review and breakdown: Gintama' (2015) Episode 5
Sarutobi Ayame (Sacchan) installs a one-way mirror in the Yorozuya's bathroom to spy on Gintoki. The trio discovers this and "trolls" her by revealing increasingly bizarre and fake "secrets"—including Kagura pretending to have a Saiyan-like tail and Gintoki revealing he is bald. The episode reintroduces characters in new roles, such
1. Episode 270: "A Mirror Provides a Reflection of Both Your Beautiful and Ugly Sides" Gintama' (2015) Episode 5