The Kaidou Family Scandal Compilation

Older or younger.
The choice you are presented with is, to choose only one.

Osamu Kaidou, the older brother.
Reiji Kaidou, the younger brother.

The dilemma is more than who. It's why the choice is being made.

This is the compilation of the series "The Kaidou Family Scandal".
Bonus tracks included.

Includes...
"The Kaidou Family Scandal #1"
http://www.dlsite.com/ecchi-eng/work/=/product_id/RE183381.html

"The Kaidou Family Scandal #2"
http://www.dlsite.com/ecchi-eng/work/=/product_id/RE188484.html

"The Kaidou Family Scandal #3"
http://www.dlsite.com/ecchi-eng/work/=/product_id/RE195695.html

+ Bonus tracks:
Ending with Osamu: 19 minutes 34 seconds
Ending with Reiji: 17 minutes 6 seconds

CVs:
Nouneimu (as Osamu Kaidou)
Atsushi Sugiyama (as Reiji Kaidou)

Detailed information (Japanese):
http://www.otusun.club/cube/profile1011.html