With You by My Side
Status
Summary
AU: Fuutarou and Itsuki played often when they were kids, arriving to the point of falling in love with each other and getting betrothed thanks to their fathers. The boy had to leave at certain point because of some family issues, but after 5 years he's back and found out also that he has to help not only Itsuki but also her sisters. What more awaits them?