So this super special episode is essentially an extended commercial for laundry detergent. It's like those ones you see where the kid brings in their super dirty clothes and mom or dad uses the detergent being advertised and everything comes out perfectly clean, except this commercial is 15 minutes long instead of 30 seconds. That being said, it's still fun and it's still cute.

The story here is simply that Tinn wants to hear Gun say that he likes him and he goes to various lengths to get Gun to say so dirtying his shirt considerably while doing so. Gun also dirties his shirt and so they need to wash them, hence where the laundry detergent comes in. We're also treated to Gemini and Fourth singing their song You're Blushing.

It doesn't add much to their story, it really is just light and sweet, a pleasantly short diversion. But after the disappointment of their episodes in Our Skyy 2, this was a much more satisfactory way to wish the characters farewell.