LOL the background of that double spread is literally a rendered photograph of the beach (look at the details of the people). That aside, Sumi is so lovable and deserves the best.
I don't care in the story how much he simps for chizuru or how he traps mami or how much he ignores ruka. The day this girl confesses and this kid rejects her BOY I AM GOING TO BUY THE MANGA VOLUME OF THE CHAPTER AND RIP THAT BOOK IN HALF