^
I dont see sisterly love here, I know a lot of people really love DoumekixWatanuki but please dont be blind to whats going on because its against your fandom. I'm not saying that theres nothing going on between Watanuki and Doumeki but for now "i[Watanuki] like himawari-chan the most,"
I'm not going to diss you, but obviously, you're the one who is blind to Watanuki's character. I like Himawari, compared to the hints we've gotten for DxW, how many hints are there for HxW?
As for Watanuki's character, note that he has lost both of his parents. Now, someone, Doumeki to be exact, is always by his side, saving his ***. Watanuki's acknowledges that Doumeki's cares about him. But has he came to accept that? No. Because the people that cared for him, died for him. He doesn't want that to happen with Doumeki. Therefore, you get his, "let's push Doumeki away" actions. To simply put it, Watanuki is in denial.
Yes, Himawari does care for Watanuki, and even Yuuko does, but it doesn't meet up to how much Doumeki cares for Watanuki.
Just because you got your one chapter that is dedicated to HxW, please don't be blind by the recent chapters. Also, "because i like himawari-chan the most," if you say that in Japanese, "Himawari-chan ichi ban suki dakara, nakasenai," That can also be meant for friendship. I mean really. Even if he says, "I like Himawari the best," and he had to choose between, never seeing Yuuko again, or never seeing Himawari again, he wouldn't be able to choose.
Also, Watanuki took a big fall. Sometimes people say exaggerate things when they're /that/ hurt.
But I do agree with the whole sisterly love. I think it's more like strong friendship.