why sanae is included in the old maids alliance???
Some pool happy guy sacrificed Sanae for no reason, oblivious to the fact that she's not part of it. Selective vision maybe? I'd say Sanae is unlucky but it's just bad pooling on the picture.
I guess the criteria for the pool is a bit on the vague side. "At least three of the Old Maids", but some of the pool entries (starting at page 2) included characters outside of the group. There's a lot more like these than you think.