Could tell at the beginning of the chapter something was going to happen to her soon with the way she was talking. Just didn't expect to happen by the end of the chapter.
. Much like the ending Season 1 of the anime adaptation pulled with the wedding, leaving it open ended.[/spoiler]
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@aznsouljah253 Yotsuba was the one that he originally played with as a kid. She kept her feelings back for her sisters, as the other 4 had feelings for him too and most had told him. Came down to him choosing and picked Yotsuba, although it's not told if he knew she's the one from his...
Just a wild shot in the dark, but guessing from the image. Starting from left to right: Itsuki, Nino, Ichika, Miku & Yotsuba.
Just guessing with the way some of the characters are standing match the way they acted in the past.