Just because I ship MitsuSara doesn't mean I ship BoruSumi. I despise BoruSumi, and I despise Sumire more.
Sumire is just a filler character created by SP just for the sake of force-highlighting Boruto of his existence as a protagonist and it is entirely dim compared to Sarada. Yes, Sarada should have been the main character. Sakura's strength & great chakra control, her struggles as an Uchiha (which is the clan that is the most judged, scrutinized, and fucked up by the elders & other fellow villagers), and Naruto's dream of becoming a Hokage. Sarada is the embodiment of Team 7 and the best ninja to inherit the Will of Fire.
Compare that to Boruto who despises the Hokage, despises the idea of becoming Hokage, and just a brat who runs around hating the fact that his father is the Hokage and doing Hokage stuff (when being the Hokage is the position Naruto had dreamed and dedicated his life for). It simply defies Naruto's original "Ninja Way".
So to make Boruto seem more important, SP just added a filler character to highlight it the hell out of him. But still, it is way far off than Sarada's importance and total existence.
And the most despised thing I despise is that Sumire is somewhat Hinata 2.0 with stolen character, personality, & backstory of Sasuke. Add it also the fact that even though she's a filler, she is related to Danzo, (which is my most hated character next to the attempt SP-character-change of Hinata w/ stolen Sakura's personality & abilities).
So yeah, get the hell out of BoruSumi far, far away from me.
Sumire's filler existence & BoruSumi just got me react like these the whole time: