So according to the tactic scroll I'm using rn, just don't mind it.
But this lineup's pretty strong if utilized properly


These are the talents that I chose for the lineup

Now let's start with their chase skills

As you can see, my hashirama's not yet at full BT. But once you get him to full bt, you'll be wrecking people with no problem by switching your summon, instead of flood dragon, go for Gamariki.
The following nonBTed skills I have with hashirama are
Ninja God: Once at full BT, the buff will last for the duration of the whole battle instead of just 5 rounds. (I mean, that's the only difference, you won't have any problem as long as you finish the battle under five rounds if you haven't full BT your hashi like mine)

Paradise Pure land: Once full BT, it'll be having it's Y branch

I suggest you pick the +2 chase since you'll be aiming to reach the 30th hit combo by having gamariki as your summon instead of flood dragon.

Now you've seen the talents and the chases, and assuming you already know how the chase sequence might happen. We'll start discussing their buffs and how it benefits the team.

Fire Main:
Fire and Earth style enhancement: Since your lineup is made up of 3 fire elements and hashirama who's an Earth style element, this buff will give the whole team a considerable amount of ninjutsu and attack boost for 5 rounds. That's already a huge advantage.

Oboro Clone Jutsu: You c*e the clone to act as a meatshield for your itachi or hashirama, whichever you want to place in front of your main. This is a very versatile skill which can be used both defensively and offensively.

Death Mirage: If you're confident enough, you can pick this skill over oboro clone. Though it poses a greater risk for your ninjas since most of the ninjas you'll be encountering would be ninjas that would standard attack the ninjas directly infront of them. And since you could be putting your main at any place except the Pos1, you won't be able to reduce the ninjutsu of the opponent's ninja who will attack first.

Danzo or Fu Assist Ninja: They'll be increasing Ninjutsu & Resistance, or Attack & Defense of fire elements depending on your assist ninja level. That's already a good boost.

Hashirama:
Ninja God: Increases Ninjutsu of all your units by 30% for 5 rounds (it'll be upgraded to the duration of whole battle once full BT). A very significant booster
Choosing which would be situational:
Wood Style Chakra +2: recovers 10% of hashirama's HP whenever he recover's chakra. He's also immune to ninjutsu damage.
Sennin: Hashirama is immune to debuffs.

Shisui Kimono:
Body Flicker technique: Shisui has incredibly high chances to avoid chases, there can be no limit to how many chases he can avoid per round as what I have observed. Also he gains an additional 0.5% initiative and 12% ninjutsu everytime he triggers his chase skill, I don't know how long the duration of the stat boost will last though. So as long as you can launch a ninja with any of your attacks (except your main's), you can have shisui boost his own ninjutsu.

Itachi Anbu:
Coordinated Attack: before each action, itachi will give 2 uchihas an extra standard attack while also clearing 1 layer of debuff to both of the recipients. With this skill, itachi can help shisui ensure a launch if in case shisui's 1st standard attack failed to launch as a result of enemy evasion or just by luck.(Despite shisui's standard attack having a high chance of repulse, it can sometimes fail but it's rare, so you'll just worry about evasion skills like Naruto and minato's passive, and the likes.)


Now we're done talking about the buffs you receive from the lineup, we'll be talking about the debuffs that you'll be giving.

Shisui Kimono:
Double Flash: Though I don't really consider INTERRUPTION as a debuff, but it still gives your opponent a disadvantage, this mystery c*so cause repulse which would lead to your long combo.
Shisui uchiha body flicker: Causes repulse and ignition to the front units.
Fire release Phoenix sage flower nail crimson: Deals damage and ignition after being triggered by 30 hit combo.

Itachi Uchiha:
Uchiha style moonlight slash: Deals damage to a unit while knocking down, cancels shields and buffs on that unit, and deals tag to the target unit.
Setsugetsuka Flash:Causes 30% increased damage to the whole opponent team while also applying tag.

Hashirama Senju:
Wood Style Great tree breaker: Attacks the front row units with high chance of causing low float, 4hit combo and immobile
Wood Style Deep Forest Creation: Besides giving you buffs, this mystery skill also lets you cause damage to 2 random opponent ninjas while stealing 30 chakra from each of them and applying immobile.
Paradise Pure land heaven fist +2: Chases low floated enemy 2 times, while causing interruption
Paradise Pure land heaven fist Y: Chases low floated enemy once, but increasing enemy mystery cooldown by 1.

We're done with the buffs and debuffs, let's now get to the last part, the extension of your mysteries and chases. The summons.
Active summons:
Giant Katsuyu: Curing: It'll help with your teams sustainability, considering that none of your ninjas can heal up except hashirama. 3rounds cooldown, available at 1st round.
Ninja Dog Pakkun: deals tag to enemy's entire lineup. 5 round cooldown??? not sure, but available on 2nd round.
Monkey King: Summons a copy of your main, this could add another meatshield for your team, which c*so attack. You c*so substitute it to with Shiba who has a similar effect except it won't summon a duplicate main.

Chase Summons:
Flood Dragon: Chases low floated enemy 2 times. Good if you haven't full BT your hashirama yet, but useless once you full BT hashirama.
Gamariki: Chases 10 combo, lowers resistance of 3 opponents. A very useful summon, which will help you burst your opponents easier as battle progresses through the rounds.
Ibuse: Chases 10 Combo, causes poison to 2 opponent units. You can choose this too if you're willing to take the risk and pray that you don't encounter full immune to debuff team.
King of HellChases 10 Combo, causes poison to 3 opponents. Again you can choose this if you're pretty confident that you'll be up against a team without much debuff immunity. Once you encounter such a team, you'll be dealing tons of afterturn damage with poison and ignition.

Hope this could help you if you're looking for a good lineup for kimono shisui. Have fun,and Peace!