User blog comment:DatAsymptote/reacc for the interaccs/@comment-38195881-20200130021124/@comment-38195881-20200201065809

cosmo is generally a very sociable person! i can def see him as the type of royal upperclassman who often goes around and mingle with the younger students (mainly the royal ones) to make them feel welcome at the school, so that could be a way for them to meet! additionally, he's very active and enjoys activities pertaining to nature and the outdoors (like gardening! and hiking!). also, i've not rlly gone into depth abt this part of his character but he's very big on environmentalism! he's apart of the enchanted forest club, and there's not much on this in canon but as an educated guess i believe it's all abt maintaining the enchanted forest : O

reading more between the lines of ur description of ruinous, i can see some very interesting parallels between ruinous' desire to be a insubstantial, pretty boy prince vs. glaucio's determination to break away from that notion of princehood, in conjunction with their rebellious natures and also!!! they both enjoy art, or at least glaucio likes painting and drawing and ruinous has a knack for photography, there could be ground for a friendship (or allyship) there !!!