Fourth in a six-volume series, this volume continues the story between Chiharu and Kazuki as well Kaoru and Daigo. Also includes a oneshot+extra featuring couple from first volume and another one introducing Ian.

The series goes like this:

1. Happy Yarou Wedding

2. Utsukushiki Kemonotachi {BEAUTIFUL BEAST}

3. Virgin Love

4. Toriko ni Natta Kemono {Crazy for You}

5. Junai no Seinen {The Young Person's Pure Love}

6. Kemono wa Ai de, Iyasareru {Smooth over his hurt feeling}

(Souce: MU)