Attire
If you see icicles hanging off of a samurai's clothes, don't worry, those are just part of his winter attire. Samurai have to travel and fight in all sorts of conditions, so it only makes sense that they have attire for every season.
Picture a samurai in his winter attire. His helmet is white and fuzzy and he has decorative icicles hanging down off of his armor.
そう, しょう
よそお
None
Attire like this is important because it reflects your soul (そう). The samurai is wearing clothing with icicles because that's how his heart feels too: frozen over because he has to fight in this horrible winter weather.
Picture the kind of attire you'd wear as a samurai to reflect your soul. Mine would be bright pink and covered in horses and bananas and daisies to show that I have a happy, kind soul and that I don't want to be killed by anyone else.