Outside of the known connection of Nisshō and Naoto, there is a connection to young Akito Otonashi, however, this is unusual as Akito and Naoto currently reside in the same dimension. However it is known that Dimension-C, collapsed into A, at an unstated event, putting the two together. The final counterpart Seiryūō Fuyutama is incapacitated and his status of recovery is unknown. Due to a flashpoint event, the worlds have collapsed in on themselves and as a result fused into one timeline. However none of the counterparts has noticed the shift as of yet.