The relationship between like
3 - Senpai of 4, think of 4 as a pain in the butt but still take care of him / Feeling weird to have octoling around but didn't hate 8 in particular, thought of 8 as a very flexible agent.
4 - Kouhai of 3, respect 3 a lot but still caused him trouble / Hate octorian and salmon but fine with 8 since he's the fella who save the city too.
8 - still have some traumatized about getting killed by 3, See 3 as a very strong inkling / feel amazed toward 4 in many ways (lol)