Bride of the Barrier Master, Vol. 2 (novel)

Hana agreed to marry Saku, the head of her family's main branch, when he discovered her hidden powers-but only temporarily, and for plenty of compensation. When the time comes, however, Saku is reluctant to dissolve their union, and Hana's not sure if her protests are sincere anymore. Meanwhile, several dangerous talismans go missing.

Who could have taken them, and why?