...this does rather look like another pretty pink color level incident, and Nemo appears sufficiently livid to A) have temporarily lost the ability to speak B) be this close to doing something awful to Kuro... Like shift her hands upwards a bit... Hina no, no matter how angry you are nonconsensual handholding is never OK! D:
^
They don't look like Eli and Umi so much that it has to be EliUmi (I did't even think that it was them before I read gomezio's comment).
Just focus on the good shit and ignore the stuff you don't like with pairings.