A Stylish Devil is all about the flash, being the center of attention, even the universe, if all eyes aren't on them they just aren't doing it right. 

Combo Breaker

It is difficult to remain stylish and even harder to keep all eyes on you,

Starting at 3rd level, while bringing up your style meter you will gain each effects as well as proficiency in firearms.

Starting at B you will gain a -1 to hit for each consecutive hit you make that turn up to -4, you can reset this negative modifier once per turn by switching weapons.

Style Meter

Starting at 3rd Level you gain style points, the points can be gathered through consecutive hits on enemies while not missing or being hit yourself, for every threshold you pass you get certain effects, You gain one rank of style meter per level of Stylish devil you have (i.e starting at level 3 you have access to B rank, Level 5 A rank, Level 7 S rank, and so on)

(Meter Level 1) D: 2 consecutive hits,Gain advantage on your next weapon attack

(Meter Level 2) C: You can move up to half your speed without taking attacks of opportunity

(Meter Level 3) B: You may perform an uppercut, in place of one attack, against an enemy dealing half your proficiency in d6s plus your strength mod in bludgeoning damage. When you perform this ability, the targeted creature needs to make a Dexterity save equal to DC 8 + Str Mod + Your Proficiency Bonus where you knock them upward 10ft, and are rendered prone if they fail the save. On a save your meter is reset to 0 and they are not launched into the air.

(Meter Level 4) A: You gain advantage on all attacks until the end of your next turn.

(Meter Level 5)S: When you score a critical hit, you may add one additional weapon die onto the damage.(After the critical hit)

(Meter Level 6) Ss: You deal an amount of d4's of force damage equal to your proficency bonus , to the first creature you hit.

(Meter Level 7) Sss: As you reach Sss, you may make an ultimate attack, fanning your pistol and swinging your weapons around you to make a combo attack which deals force damage equal to (proficiency bonus)*d8. Enemies must make a CON save taking full damage and being knocked airborne at the end of it, if they fail, while half damage and not being knocked prone on success. The DC being equal to 8+STR mod+prof bonus. This ultimate attack has a range of 15ft and targets all creatures within the radius (meaning allies as well)

As a bonus action you can activate your combo breaker to gain the effects of your style meter

Stylish Combat

Starting at 7th level, While enemies are airborne your attacks count as two for the purposes of the style meter. Additionally when you use your action surge you may roll performance check, all enemies that see you make a charisma saving throw, if they fail depending on your style meter a different effect will apply, at B-A rank they are blinded at S-SS rank, and Stunned at SSS rank for 4 rounds. 

Cutting Edge

Starting at 10th level you can use a reaction to parry a ranged attack made against you when attacked by ranged attack you may use your reaction to roll a weapon attack if your weapon attack exceeds the number rolled to hit you you parry the attack and gain 1 attack towards the Style Meter.

Almost Lost My Cool

Starting at 15th level you may use your reaction to activate your combo breaker on your turn instead of a bonus action, or you may use your reaction when you are about to get hit, to use one of 2 effects, You may choose to activate your combro breaker right before you get hit reducing your style meter by 1 rank, or you may choose get rid of your entire meter and start at B rank once you get 2 consecutive hits in a row

Crying For Rain

Starting at 18th level, When you build up a SSS in your Style Meter, you may choose to forgo the normal effects to enhance yourself for 1 minute, gaining the effects of haste requiring no concentration, gaining advantage on all your attack, increasing your crit range to 18-20, dealing an extra 1d6 force damage, and increasing your ac by +5 you may only use this ability once per day