I think your second point is more likely what is happening. I doubt Sumire would ever think of doing any emotional harm to Hina. She is more likely to stick her oar in and maybe make a mess of something... Hilarity will ensue...I really hope Sumire doesn't end up joining the Iemori harem. 3 is enough (and probably too much).
It seems like she's going to be a wing-woman for Himari without being a love rival which is a solid role for her.
Himari doesn't really have anyone to support her shipping route other than maybe her mother.
3 is too muchI really hope Sumire doesn't end up joining the Iemori harem. 3 is enough (and probably too much).
It seems like she's going to be a wing-woman for Himari without being a love rival which is a solid role for her.
Himari doesn't really have anyone to support her shipping route other than maybe her mother.