I am currently running an Oriental Adventures (OA) campaign called The Divine Heir and the Jade Regent loosely based around the Pathfinder Adventure Path the Jade Regent with strong influences from Sekiro. The first adventure is called The Ashina Legacy and is essentially the The Brinewall Legacy set in and completely converted to an OA setting.
I had to rewrite the adventure intro and re-theme the monsters but it worked well. Here is the flowchart of the adventure (and campaign).
I used straight up, rethemed, goblins for the bakemono – though I did use the first edition “random weapon and armour table to make them look like a motley crew. For the chief I wanted a bit more of a customised monster. The base is the goblin boss but I added some extra traits – including a hard-hat inspired by the midget assassins from Sekiro. Having said that, my PCs just brute forced him and didn’t bother trying to crack the hat.
CHIEF RENDWATTLE GUTWAD
Small humanoid (goblinoid), neutral evil
Armor Class 17 (helmet)
Hit Points 21 (6d6)
Speed 30 ft.
STR DEX CON INT WIS CHA
10 (+0) 14 (+2) 10 (+0) 10 (+0) 8 (-1) 10 (+0)
Senses Darkvision 60 ft., Passive Perception 9
Languages Common, Goblin
Challenge 1 (200 XP)
Hard Hat. Rendwattle wears a magical iron kasa (straw hat) that provides him +5 to his AC and damage threshold of 2. The hat can be targeted and sundered with an attack specifically made against it. The attack must hit AC 19 and do at least 3 damage. An axe has advantage on the attack roll.
Nimble Escape. Rendwattle can take the Disengage or Hide action as a bonus action on each of its turns.
Multiattack. Rendwattle makes two attacks with horsechopper. The second attack has disadvantage. He may forego the second attack and make a skyrocket firewaork attack instead.
Horsechopper. Melee Weapon Attack: +4 to hit, reach 5 ft., one target.
Hit: 5 (1d6 + 2) slashing damage.
Poisoned Kunai. Melee or Ranged Weapon Attack: +4 to hit, reach 5 ft. or range 30/120 ft., one target.
Hit: 5 (1d4 + 2) piercing damage and 7 (2d6) poison damage.
Skyrocket Firework (2/Day). The rocket creates a line exploding after it hits a target or after traveling 90 feet. It detonates in a 10-foot sphere and all creatures in the burst must make a DC 15 Dexterity saving throw or take 7 (2d6) fire damage and either be blinded or deafened (50% chance of either) until the end of their next round.
Redirect Attack. When a creature Rendwattle can see targets it with an attack, he chooses another bakemono within 5 feet of him. The two bakemono swap places, and the chosen bakemono becomes the target instead.
Horsechopper (NeighNeigh) is a +1 wono (hand axe) that has the animal bane property. When attacking beasts, it doubles its dice and critical hits are maximised, however, it is cursed. Curse.This axe is cursed and becoming attuned to it extends the curse to you. As long as you remain cursed, you are unwilling to part with the axe, keeping it within reach at all times. You also have disadvantage on attack rolls with weapons other than this one, unless no foe is within 60 feet of you that you can see or hear.
Whenever a beast, especially dogs and chickens (but not horses for some odd reason), crosses your path makes eye contact with you or if it damages you while the axe is in your possession, you must succeed on a DC 10 Charisma saving throw or go berserk. If the creature is a dog or chicken, you have disadvantage. While berserk, you must use your action each round to attack the creature nearest to you with the axe. If you can make extra attacks as part of the Attack action, you use those extra attacks until the target is dead and continue slashing until the end of your turn. If you have multiple possible targets, you attack one at random. You are berserk until you start your turn with no beasts within 60 feet of you that you can see or hear.
He also carries a bag of enchanted rice that heals anyone who eats it for 2d4 + 2 damage. The bag has two doses.