This technique requires a large amount of chakra, and extended usage leaves Sasuke incapable of using this technique, his Mangekyō Sharingan, and his Rinnegan's full power, for some time. Sasuke also stated that the number of people who could enter the portal was limited: only the four Kage and Boruto Uzumaki joined him on the rescue mission to save Naruto; however, they were secretly followed through the portal by two people.
- Despite the limited use Sasuke has on this technique, its refinement appears to exceed that of Kamui. Whereas Obito's accessing of another dimension with both his eyes and various body modifications caused him severe strain on his body and sight, Sasuke showed no visible strain besides momentary exhaustion.
- Naruto chapter 700+8, page 17
- Boruto: Naruto the Movie