Everyone knows that Boss Vongola has two wives, but he has never seen the other one.
Everyone calls her Mrs. Spring.
So many people speculated randomly about the reason why the other wife did not show up...
I heard that she killed Vongola and this lady's child, so she was locked up at home.
I heard that Vongola never loved her and didn't take her seriously, so he didn't take her out.
I heard that she teamed up with a rival family to betray Vongola, so she was imprisoned.
I also heard that she betrayed her husband and had an affair with someone else, so she refused to live with Boss Vongola and moved to Japan.
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