"Now we will check your full body Susanoo and its abilities, Shisui you first"

Shisui then distances himself away from the group and manifested his Susanoo; Shisui is covered in green chakra until bones, muscles, skin, armor took its place and a green humanoid creature was seen in the desert, it is more than 100m tall, with a large drill-like sword and is wearing a samurai outfit.

After that Shisui faces away from them and his Susano unleashes a barrage of chakra needles from its chest at an incredible speed to the dessert. After that he disperses his Susanoo and went towards the group and said

"Sensei, my Susanoo's ability as you see can barrage multiple needles towards the enemies, I can also use the sword to attack and I can use the eyes of my Susanoo to unleash a wide scale genjutsu to the enemies"

"Wow, you have a great AOE damage Shisui, you just need to practice fighting using it and it's your luck that you have 2 opponents to fight with" said Haru

"Hai! I will do my best"

Haru nodded and look at Obito, Obito then moves away from the group and Manifested his Susanoo, Obito's Susanoo is the same as Kakashi's Susanoo in the canon, maybe because Kakashi has Obito's eyes in the canon. It is a blue colored humanoid with wings on its back and it holds a shuriken with the same pattern as Obito's MS. 

Obito then threw his shuriken on the dessert and a large hole appeared when the shuriken came in contact with it. Obito then disperse his Susanoo and went towards the group and said

"Well, my Susanoo can teleport anything my shuriken came in contact with, it also have the same ability as my Kamui"

"Wow you really like to teleport objects to your dimension huh Obito?" tease Haru

"Hehe" Obito just laughs at Haru's words he then looks at Kakashi

Kakashi seeing the look of Obito snorted and went away, he then activated his EMS and Kakashi manifested his Susanoo; he is covered in golden-colored chakra, then after that were bones, muscles, skin, and samurai armor. His Susanoo is a golden colored humanoid but with a bird or phoenix head and 2 pairs of wings on its back, its right hand is holding a katana and both of its arms have a bracer in them and a golden flame whip could be seen on its waist.

Kakashi then waves his sword on the desert ground and a tobu zangeki was unleash on Susanoo's sword. He then disperses the Susanoo and went towards the group of dumbfounded people.

"How come, you can use your sword technique with your Susanoo and the head of your Susanoo is also different from us" ask Obito

"Well it is one of my Susanoo abilities, aside from that the bracers on its arm can absorb ninjutsus and reflect them just like my eyes and the other thing, the flame whip on its waist can bound enemies and seal their chakra just like Haru's chains but the difference is that, once bound, the enemies will burn to nothingness. As for the head you can ask Haru for that" explained Kakashi

They were all silent when they heard his explanation. After a while Haru spoke first

"So because of what I did your Susanoo gained some of my powers?"

"Yeah"

"Well, another good news of what I did then" said Haru smilingly at Kakashi 

Kakashi just smiled at Haru, Obito seeing the interaction of the two cannot help but be curious

"Hey what are you two talking about? Haru, how come Kakashi have different Susanoo than us?"

"Well due to some unexpected problem when I purified Kakashi's eye, I gave some of my bloodline to him to fix that problem, and now because of that maybe that's why his Susanoo is different from the two of you" explained Haru simply

"Hmm… I see, well can't help it, he is your boyfriend so favoritism is at play" said Obito

When Kakashi heard Obito's words, he went through him and wanted to hit his head but his fist went pass through Obito and Obito smugly look at Kakashi and said 

"You can't touch me Kakashi"

"Tsk!" 

"Well he can't but I can" said Haru while hitting Obito's head and Obito cried out in pain

"Hey how can you hit me?"

"I'm using my chains you idiot, regardless of which dimension you go, my chains can still catch you, anyways it is not favoritism since Kakashi almost died during the process due to having a pure Hatake bloodline, it fought against your bloodline and it needed my help to placate the two" explained Haru

When Obito heard Haru's words he was silent and said 

"Well I'm sorry for that I did not mean it, I was just joking you know" 

"It's fine Baka Obito; anyways we will now start training your Susanoo and use it to fight"

All of them nodded and determination filled their eyes, and after that they spend a few months in training their newly found power.

In the dessert somewhere, you could see 3 gigantic figures fighting a fire bird, well actually it looks like a bird from far away but it was actually Haru with his wings manifested on his back. 

Right now he is currently fighting the 3 using their perfect Susanoo, Shisui is using his drill-like sword to attack Haru together with his chakra needles, Kakashi is using his sword to fight him together with Shisui while Obito is providing the 2 support by launching shuriken at Haru.

Haru is using his sword to fight the 3, he also uses some of his ninjutsu, but Kakashi always use his bracers to absorb and launch it towards Haru. 

Well Haru got to admit that fighting the 3 without using his chains and Shikai is very hard. But even then, the 3 could not defeat him and they are already tired because the use of their Susanoo drains a lot of their chakra.

However during these past months, the 3 improve their use of their new abilities by leaps and bound; Shisui can use his sword to pierce through and destroy a mountain. 

Obito on the other hand, can teleport objects by using his shuriken, he can also send it back as an attack to his opponents. 

Kakashi is training to use his sword technique while using Susanoo, the other thing with Kakashi's Susanoo is that it can grew extra limbs to help him attack, he can also manifest swords using his chakra, so he can use nitoryu or santoryu or many more as long as he can have control over it.

He is, however, trying to know to what extent he can add on his limbs, if he can conjure like a hundred or thousand hands but it looks like his chakra reserve won't allow it. But he is still young after all and he can still grow his chakra more and refine his jutsu to perfection.

After fighting for a while, the 3 disperses their Susanoo since they are all tired and their chakra is rapidly decreasing.

"Well, I think you are all prepared" said Haru

The 3 just nodded and lay down on the dessert sand. Haru just chuckled and said to them

"Hehe well you can have a month of rest, before I will go and tell Minato-nii about your progress"

"Yes, thank you Haru, I can now enjoy a date with Rin, it's been so long since we got out due to your training" said Obito

"Tsk! Yeah yeah it's my fault" said Haru

Obito just laughs and closes his eyes, Kakashi just sat near at Haru and Shisui just look at the sky above them, after a little rest Haru teleported the group towards Konoha.