If anyone's curious, here is some info regarding Kenshin & Gawain's buff skills with the new outfits coming next week. I don't know any coding languages nor do I know Japanese but I'm confident in my conjectures.
Firstly, I'm talking about these skills, currently already added as of 2/5 maintenance and partially translated:
Seems like there will be weaker versions of Gawain & Kenshin in the gold tier of the new Nyankoropon, similar to Autumn Lancelot. At the Yorozu Exchange, you can trade one summoning scroll of their "weaker" variant for an outfit change that applies to the original Kenshin or Gawain. And, obviously, that outfit unlocks the skills displayed in the screenshot above.
SD: New Year's Swig"
Drink's enchanted alcohol to receive some of the following buffs.
*Buffs can stack up through multiple uses of this skill, however using it too much will cause debuffs to be cast on you."
Kenshin's buff works exactly like Oda's buff. It has a long cooldown and a 15 second duration, and each consecutive use before the buff ends will increase the effects of the buff in addition to resetting its duration. So you need multiple weapons to get to higher tier buffs. Additionally, using it too many times will result in a ludicrous debuff instead.
Use 1:
Attack +10%
P.Atk Spd +10
Movement Speed +10
Cooldown Cut +5
Use 2:
Attack +15%
P.Atk Spd +15
Movement Speed +15
Cooldown Cut +10
Use 3:
Attack +20%
P.Atk Spd +20
Movement Speed +20
Cooldown Cut +15
Use 4:
Attack -100%
P.Atk Spd -50
Movement Speed -50
Cooldown Cut -50
Crit -100%
Certainly not much compared to Oda's buff that can give up to +150 flight, but it's something.
Gawain's buff seems to work differently. It looks like it's a random fire buff:
~60% chance: +20 Fire
~25% chance : +30 Fire
~10% chance: +50 fire, 20%/1 fire passive with 1mil cap
~4% chance : -10 Movement Speed
~1% chance: -50 Fire, -10 Movement Speed
30 second duration, 120 second cooldown, with cooldown shared between weapons. Could keep it active constantly with enough cooldown cut, I think.
The outfits also unlock some other skills, the usage of which should be apparent by using a skill and checking its description in the Skills menu. The new skills have wind element portions in addition to the partner's usual elements.