A collection of stories:

1-3. Matsuriko

Tenjou Kengo returns to his old house seven years after running away from it.
His father, a deranged landowner, stays confined in his mansion, where he hides his many illegitimate daughters from the world to save face.

Brought back by a promise made with his half-sister and childhood friend Matsuriko, can Kengo really free those girls from countless years of isolation?

4. Etienne de Silhouette

5. Moratorium Shounen x Shoujo