Our second volume allows us to show how relational sociology formulates arguments continuing its investigation on the relation, deepening and broadening the ground for reflections on the types, modes and scope of social relations. We will see that the authors point to a mutation in the expansion of the relation that goes beyond the human and the non-human towards what we might call the “relational other”. This preoccupation with the “relational other” comes in three distinctive forms, which are not exclusive to each other: The relation with otherness (the more-than-human), the otherness of the relation (the outside or other side of the relations) and the combination of both in the “otherwise of the relation” (the robots among us).