What is the specific team and stage in question?

@Wysit generally

So in lame-mans term, Tranquil Transcendence Sun Wu Kong is out of place in the late game?

Yes, it is only used in specific situations as a utility member. This might change if TSZ gets VR, or some evolution though.

But his leader skill doesn't seem half bad tho.

The maximum damage multiplier is 81x with leader and ally, which is definitely not enough for current stages.

I am not sure if his dodge ability of maximum 50% chance adds up if you use him for both leader and ally. However, there are quite a few damage negating abilities such as Diamond, or dodging abilities such as Copper Bullet, or even damage reduction abilities. These only come into play if it is not possible to kill the enemy in a single round and the team's HP can't take the hit. Having a decent attack multiplier is much more important.

Additionally, he doesn't provide any spinning time extension either so for shields like initial 7 combo with flaming areas, you must have really good spinning skills. He also doesn't have any rune possessive effect, meaning if you're using a team with multiple attributes, you are really dependent on luck and not having a rune drought. Also, his leader skills mainly come into play when your health is low but his leader skill doesn't provide any HP multiplier, so you need to have enough health to take the hit and not die. This is a problem when the enemy hits for 20000+ HP and ignores damage reducing skills.

Essentially, his SR leader skill is only an upgraded version of his previous grind leader skill but is not good enough to justify using him as a leader. In the current meta, he is firmly a member card.

So better stick to VOCALOID presets for maximum damage.

But are there extremely good combinations with any particular ally with TTSWK

In some ways, TTSWK teams are a bit like Enoch teams in that you are trying to use allies that have good abilities in the leader skill because you won't be able to activate the leader-ally team skill skill. But Enoch's leader skill focuses on increasing the total HP rather than dodging the attacks,

With that in mind, the recent 1% Ingrid provides a maximum attack multiplier of 29.16 and 1.8x to HP and recovery, but requires unique attribute and race between all members and ally (doesn't include leader) so it means you can't put another dark and/or human card in your team. Panther, from the same series, would be a good choice of member if you use Ingrid as ally because Ingrid allows you to benefit from both effects of Panther's skill and Panther's active skill also has -6CD upon entering the stage (it is a CD 6 card). The unique attribute and race requirement though can be a pain and since there is no possessive effect, unless you use Panther's active which cause initial skydrop to be in the race and attribute of the member in that column, and probably Ingrid's active at the same time for that burst, you might struggle to get all members attacking.

Other allies that come to mind include Ban (absorb 45% of damage from non-demon enemies), Pandora (300% rune possessive effect), Daji (increased combo bonus).

Useful member setups could include cards that drop your HP to 1, such as Schnauzer, Delta, Zack, Papaver.

A Lu Bu based setup could work really well since it deducts health regardless of pretty much all skills. Maybe dual TTSWK (assuming that the dodge probability adds up), a card that deducts your HP to 1 and then Lu Bu combination + 1 more Lu Bu and then just grind, don't heal (so the maximum dodge chance stays in effect), keep dodging until Lu Bu kills the enemy? But of course, this wouldn't work with any stage that has skill lock. I don't think that the dodge ability would be negated by the enemy skill 'ignore damage-reducing and willpower skills'? Also probably wouldn't work with stages with lots of board hazards, like whole board frozen. (Actually, it might still work for Papaver if your board is frozen, but if the enemy freezes your board every round [there have been previous examples of this], that would be a big problem because you can't dissolve runes for the CD of Lu Bu to go down).

Edit: It is crucial for this team that you can stall about 5 rounds at the beginning of the battle to get the drop to 1 HP (Papaver with the elf dragonware for CD-2 upon entering the stage could be a good option). Before that, you are pretty vulnerable to any damage because dual TTSWK has no HP multiplier, only damage reduction so if the enemy has high attack and ignores damage reduction, this team won't work.

Understood