situation 1 : A cover up that although she likes kojima but tried to cover up by doing such a intimacy act with miichan, which really looks as though they are couple
situation 2 : both yuko and miichan shares the common interest of touching gals "bodies" and miichan likes yuko.
well, during the akb600sec yuko was having a gals talk with kayo and she mentioned that she like guys with mustache, i can imagine that those guys who like yuko will start to grow mustache..hahaha