>>4180508Tokomachi is very stacked, their relationship feels very natural, and anything they do together feels even more special because it's between two """"rival"""" companies. There's nothing that mandates the two to collab together aside from their own desires, so there's less of an incentive to think that there are ulterior motives behind the pairing aside from these girls just want to do things together.
Not like Suisei's other pairings are any less "real", but Tokomachi just has a special something with how they treat each other.