You're my loveprize in Viewfinder Story
Volume 1: Target in the Finder (Finder no Hyouteki).
1) You're my Loveprize in Viewfinder (1st part of the main series, Viewfinder; 3 chapters : You're my Loveprize in Viewfinder, Fixer & an extra, Embrace the Heat of the Night): During a routine journalism assignment, freelance photographer Akihito Takaba is captured by the mysterious Asami, a powerful leader in Japan's underworld society. Asami forces his captive to undergo a night of pleasure and pain never before imagined...
2) Love Lesson (1st part of the Love Lesson series): Ichijou saved Sakurai from a pervert on the bus on the way to the school. But his own intentions were not so pure...
3) Loving Plant (Koi wo Suru Shokubutsu) (1st part of the Koisuru series): Sports stars, Hiyama and Mizuno, find themselves caught up in something bigger than they first imagined when they go out to find out whether or not their fathers are really gay.
4) Risky Society: God Bless My Justice (stand alone) : A rookie to a society of people with supernatural abilities must prove himself (and his love) to his superior.
Volume 2: Cage in the Finder (Finder no Ori)
1) Body Chase (main Viewfinder series; 1 chapter): Takaba helps out the police by infiltrating Asami's flagship club, Sion.
2) Splendor of High Rises (Kourou no Hana) (main Viewfinder series; 4 chapters): the story of Feilong and Asami's first meeting, seven years prior in Hong Kong.
3) Loving DNA (Koi wo Suru DNA) (2nd part of the Koisuru series).
Volume 3: One Wing in the Finder (Finder no Sekiyoku)
1) Naked Truth (main Viewfinder series; ch1-5: The Japan arc): Feilong returns to Japan, setting up an explosive situation that will take him, Takaba, and Asami across countries to resolve the events set in motion seven years in the past.
2) Love Surprise (1st part of the Love Prize series): A light oneshot side story to the Viewfinder series taking place New Year's Eve with a very drunk Takaba.
3) Baked Sweet Glasses (stand alone): Cute underwear salesman has his heart set on making a tough sale.
4) Koi wo Suru Baby Leaf (3rd part of the Koisuru series): The story of how the fathers met.
Volume 4: Prisoner in the Finder (Finder no Ryoshuu)
1) Naked Truth (main Viewfinder series; ch6-10: The Hong Kong arc).
2) Takaba's Wonderful Day (2nd part of the Love Prize series): Asami sees photographer Takaba on a shoot and takes him on a drinking date. Another light sidestory to the Viewfinder series.
Volume 5: ?
1) Naked Truth (main Viewfinder series; ch11-13: ? arc).
2) Naked Truth - Zero (main Viewfinder series).
3) Takaba Akihito's Graceful Summer Holiday (3rd part of the Love Prize series).
4) School Ghost Story (Gakko no Kaidan) (2nd part of the Love Lesson series).