Akito can transform into the mythical nine tailed fox who once ravaged the lands of heaven. It grants him very high class body from the birth, to be able to bear the power of nine tailed fox.

He has superb combat sense, with his superb instinct which is a part of quirk. And his strength can increase exponentially with each of his tails liberation.

And he also has the ability of pyrokinesis.

Weakness - 

His tail liberation can give him power, but to use it, a strong body is needed. If he unleased his tailed without any thought, the power might go berserk and he will die.

This quirk is very bloodthirsty. From childhood, the enraged power constantly caused headaches in Akito's head making him go insane and destroy everything. But Akito has controlled this overwhelming energy from making him insane, but as a side effect his lust has grown above the bounds and he needs to vent his lust to keep himself sane.

Konan can use her quirk to produce or even turn herself into different kinds of paper. It may look like a weak ability, but because of its nature, she is immune to physical attacks. She can control the produced paper at a certain radius, and can do anything she likes with the paper.

Weakness -

Because of nature of paper, she is weak to fire and water. Fire can harm her, while water makes her wet which hampers her quirk.

Quirk - Transform

Est can transform into any inorganic object with anti-quirk properties. Except mutant quirks with physical properties, she is immune to rest of the quirks and can also disable one's quirk in contact.

Weakness -

Even though she can transform to anything with anti quirk properties, while she is transformed, Est can't move even a single bit which kind of makes her useless in single fights. And because of the high use of energy in this quirk, her food intake is quite high which made Akiko worried about his pockets.

Her quirk lets her to store any item not bigger than her to store in an imaginary place, and she can equip it for her use just like in games.

While equiping, even if she has a item she doesn't know how to use, her body will automatically get the knowledge on it's use.

But if she can use it or not, depends on her.