The manga inserted a drunken Jamie attempt at sex, while moving the first mixed bathing from the middle of the 2nd volume to between the 1st and 2nd while adding everyone to it. It also hasn't added much about Rain becoming his property yet which was explained later in the volume. There's a good chance she's going to spend a night alone with him once the manga finishes the current volume. They will have to be somewhere else if it wants that to be a surprise for everyone later.