Kokai Reiwa Statblock

Kokai Reiwa CR: 4

Medium celestial, chaotic neutral

Armor Class: 15

Hit Points: 54

Speed: 30 ft

STR

12 +1

DEX

16 +3

CON

14 +2

INT

10 +0

WIS

12 +1

CHA

20 +5

Saving Throws: Dexterity +6, Charisma +8

Skills: Performance +11, Persuasion +8, Intimidation +8, Acrobatics +6

Damage Resistances: Thunder

Senses: Darkvision 60 ft., Passive Perception 11

Languages: Japanese

Challenge Rating: 4

Proficiency Bonus: +3

At will: Vicious Mockery, Minor Illusion

2/day: Dissonant Whispers, Healing Word, Suggestion, Thunderwave

Electric Guitar Weapon. Your guitar can be used as a spellcasting focus and as a melee weapon that deals 1d8 thunder damage.
Rock Star Aura. Your presence unnerves foes. Hostile creatures within 10 feet have disadvantage on Wisdom saving throws.
Dead Drop Silence (1/Day) Kokai slams her guitar down and drops the battlefield into perfect silence for 1 minute in a 20-ft-radius sphere centered on a point she can see within 60 ft:

No sound can be made inside

Casting with verbal components fails

Creatures inside have disadvantage on Concentration saves

Kokai is immune to this effect

Rabbit’s Feet. You gain a jumping length of 40 feet, and can jump vertically as well. You can jump instead of walking, running, or climbing without a reduction in speed. You have advantage on all athletics or acrobatics checks that involve jumping. Opportunity attacks made against you if you are jumping away from an enemy, are made with disadvantage
Nowabunny. As an action, you can transform yourself into a Crystal Rabbit

Actions

Multiattack. You make two attacks: one with Electric Guitar Smash and one with Riff of Disruption.
Electric Guitar Smash. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 2) thunder damage.
Riff of Disruption. You strum a disruptive riff that releases a shockwave of sound. Each creature in a 10-foot cone must make a Constitution saving throw (DC 16). On a failed save, a creature takes 7 (2d6) thunder damage and is pushed back 5 feet. On a successful save, it takes half damage and isn’t pushed.
Shredding Solo (Recharge 5–6). You play a piercing solo, causing a 15-foot radius of sonic feedback centered on itself. All creatures in the area must make a Wisdom saving throw (DC 16) or become frightened of you until the end of their next turn.
Encore Shockwave (1/Day) Kokai unleashes a crescendo of sonic energy in a 20-foot radius:

Enemies: DC 16 Constitution save

Fail: 4d6 thunder damage + stunned

Success: Half damage

Allies: Gain 5 temporary HP and advantage on next attack or save

Reactions

Feedback Shield. When a creature within 5 feet of you hits it with an attack, you can use its reaction to emit a blast of feedback, dealing 2d4 + 1 thunder damage to the attacker.