mitsuki is from another village..... maybe from the moon "Tsuki=moon" (i.e. The Last)- I know it's kinda far fetched but this is Kishi...
New Sharingan kid- Kakashi even mentioned that this kid might be an experiment from Oro, maybe they had already found other's like them (wannabe Uchiha experiments) that Oro had been working on prior, like during Kakashi's reign as Hokage and they dealt with them in the past. Is Sarada like them, and maybe Sakura took pity on her because she was a babygirl and brought her back to Konoha without Sasuke knowing? That is a whole story right there.... Sarada has obvious suspicions and is not sure where she was even born and nobody is telling her anything.
The place where weird Akatsuki guy is based out on looks like warped mokuton jutsu, maybe from the tree where they were all dangling from during the war. Maybe Yamato can sense something and that is why Kakashi is calling for him.
ChouChou although funny, was starting to get annoying... she needs to stay home and leave Naruto and Sarada to look for Sasuke, she would only slow them down and the comic relief will be played out quickly.
Sasuke obviously has a phone and has used it when he does get to charge it, but he can't call Sakura? He can't send his falcon to his family??? makes me question the validity of their relationship. I had hope from the Last that their relationship would grow, albeit slowly, since he promised her to come back but really dude at least call and check to see if Sakura has moved on or something. Naruto hasn't given him updates about his precious heir to the Uchiha clan? Come on that is all Sasuke could think about in the past was reviving his clan, making sure that his clan lived on, how the hell does he completely ignore his child? gonna try to give him the benefit of doubt and consider Sasuke not knowing about Sarada, but that is stretching it for me. Naruto seems like the type who is very protective and loving of his own children, so I would hope that his (and Shikamaru's) fatherly instincts would have kicked in and mentioned Sarada's progress to Sasuke when they did get him on the phone.
Anyways can't wait for next chapter, hope to see Yamato, maybe we will see Asuma's kid since he was supposedly with Kakashi. BTW love that Kakashi is living it up and actually taking a break. His shuriken yukata reminds me of his shuriken bedspread in a cover picture of his. hahaha