i think that raku have a pretty low self estem because as shuu says he completely remove himseklf from the posibilities that the girls are in love with him (even when is so obvious) is like he cant accept that someone else love him or is afraid of love without knowing it
i really hope pierrot or other studio animate the novels post the end of the manga, they explain all the relationshi and whats happen after nartuo the last till this manga (like shikamaru ans temari relationship, gaara future, the period of kakashi as hokage, sasuke and sakura love story etc..)
the anime already pass the manga