Each of the following 37 scenes contain instances of lesbian cunnilingus, threesomes between one male and two females, and fucking from behind.
It's likely in most of these titles that it occurs simultaneously, thus meeting your criteria.
Video Title: Ane Kyun
Description: Guy's girlfriend and sister hook up before he joins them
Episode: 1
Scene: 3
Start: 12:25
Video Title: Bondage 101
Description: Lesbian sex with ribbed strap-on
Episode: 2
Scene: 2
Start: 14:42
Video Title: Booby Life
Description: Threesome with two buxom women including the intra-vaginal view
Episode: 2
Scene: 2
Start: 16:40
Video Title: Consenting Adultery
Description: Two MILFs decide to share the maintenance guy
Episode: 2
Scene: 6
Start: 20:10
Scene Length: 6:56
Video Title: Cool Devices
Description: Threesome at home
Episode: 10
Scene: 3
Start: 12:50
Video Title: Cosplay Sex Machine
Description: Lesbians followed by a hermaphrodite threesome
Episode: 2
Scene: 3
Start: 16:28
Video Title: Debt Sisters
Description: Threesome in a classroom with sisters
Episode: 2
Scene: 4
Start: 18:17
Video Title: Dirty By The Dozen
Description: Teen threesome in the gym equipment room
Episode: 2
Scene: 1
Start: 1:28
Video Title: Elfina
Description: Conqueror introduces his old flame for a threesome
Episode: 3
Scene: 4
Start: 21:08
Video Title: Genzai Byoto
Description: Threesome with nurses
Episode: 1
Scene: 3
Start: 21:45
Video Title: Genzai Byoto
Description: Threesome with lesbian nurses
Episode: 2
Scene: 1
Start: 11:06
Video Title: Heartwork
Description: Threesome on a rooftop
Episode: 2
Scene: 2
Start: 8:21
Video Title: Jiburiru II
Description: Threesome with two lesbians angels
Episode: 4
Scene: 2
Start: 19:10
Video Title: Kanojo x Kanojo x Kanojo
Description: Gymsuit-wearing threesome in the school infirmary
Episode: 2
Scene: 3
Start: 9:12
Video Title: Karakuri Ninja Girl
Description: Hermaphrodite threesome
Episode: 1
Scene: 1
Start: 13:19
Video Title: Last Train to Gropesville
Description: Threesome in a train station
Episode: 1
Scene: 4
Start: 20:30
Video Title: Learning The Hard Way
Description: Threesome with mother and daughter
Episode: 1
Scene: 3
Start: 18:14
Video Title: Leatherman
Description: Lesbian scene followed by threesome
Episode: 3
Scene: 2
Start: 8:28
Video Title: Maids in Dreams
Description: Group sex in a dungeon
Episode: 1
Scene: 1
Start: 10:44
Video Title: Marauding MILF
Description: MILF joins guy and his neighbor for a threesome
Episode: 1
Scene: 3
Start: 8:50
Video Title: My Brothers Wife
Description: Threesome with a mom and daughter
Episode: 2
Scene: 6
Start: 21:14
Video Title: Night Shift Nurses
Description: Nurse joins doctor and another nurse for sex
Episode: 5
Scene: 4
Start: 15:55
Video Title: Oshioki Gakuen Reijou Kousei Keikaku
Description: Woman awakens in a hospital bed and immediately has a threesome
Episode: 2
Scene: 4
Start: 12:00
Scene Length: 4:29
Video Title: Private Sessions
Description: Threesome, with one guy and two sisters while a girl videos it
Episode: 2
Scene: 2
Start: 16:04
Video Title: Private Sessions II
Description: Threesome on the school rooftop
Episode: 2
Scene: 4
Start: 12:20
Video Title: Rensa Byoutou
Description: Threesome with two large-breasted, lesbian nurses
Episode: 1
Scene: 4
Start: 14:30
Video Title: School of Darkness
Description: Hetero sex turns into a threesome, with surprise ending
Episode: 3
Scene: 2
Start: 34:41
Video Title: Sex Taxi
Description: Threesome and forced lesbian in the gym equipment room
Episode: 2
Scene: 4
Start: 19:48
Video Title: Sexfriend
Description: Student threesome
Episode: 2
Scene: 6
Start: 20:49
Video Title: Sextra Credit
Description: Guy forced to have a threesome with two teachers
Episode: 2
Scene: 2
Start: 6:25
Scene Length: 4:54
Video Title: Sexual Pursuit II
Description: Threesome with his sisters
Episode: 2
Scene: 3
Start: 19:52
Video Title: Sleazy Family
Description: Woman masturbates watching her sister and nephew fuck
Episode: 3
Scene: 1
Start: 1:03
Scene Length: 9:08
Video Title: Spa of Love
Description: Couple fucks then is joined for a threesome
Episode: 1
Scene: 1
Start: 0:00
Scene Length: 6:10
Video Title: Step MILF
Description: Threesome with his mother and sister
Episode: 2
Scene: 5
Start: 23:27
Video Title: Teachers Pet II
Description: Two teachers and a student have a threesome
Episode: 2
Scene: 2
Start: 18:10
Video Title: The Truth About Nurses
Description: Patient has a threesome with two lesbian nurses
Episode: 1
Scene: 4
Start: 20:21
Video Title: Virgin Auction
Description: Guy watches lesbians then joins them
Episode: 2
Scene: 2
Start: 19:38
It's likely in most of these titles that it occurs simultaneously, thus meeting your criteria.
Video Title: Ane Kyun
Description: Guy's girlfriend and sister hook up before he joins them
Episode: 1
Scene: 3
Start: 12:25
Video Title: Bondage 101
Description: Lesbian sex with ribbed strap-on
Episode: 2
Scene: 2
Start: 14:42
Video Title: Booby Life
Description: Threesome with two buxom women including the intra-vaginal view
Episode: 2
Scene: 2
Start: 16:40
Video Title: Consenting Adultery
Description: Two MILFs decide to share the maintenance guy
Episode: 2
Scene: 6
Start: 20:10
Scene Length: 6:56
Video Title: Cool Devices
Description: Threesome at home
Episode: 10
Scene: 3
Start: 12:50
Video Title: Cosplay Sex Machine
Description: Lesbians followed by a hermaphrodite threesome
Episode: 2
Scene: 3
Start: 16:28
Video Title: Debt Sisters
Description: Threesome in a classroom with sisters
Episode: 2
Scene: 4
Start: 18:17
Video Title: Dirty By The Dozen
Description: Teen threesome in the gym equipment room
Episode: 2
Scene: 1
Start: 1:28
Video Title: Elfina
Description: Conqueror introduces his old flame for a threesome
Episode: 3
Scene: 4
Start: 21:08
Video Title: Genzai Byoto
Description: Threesome with nurses
Episode: 1
Scene: 3
Start: 21:45
Video Title: Genzai Byoto
Description: Threesome with lesbian nurses
Episode: 2
Scene: 1
Start: 11:06
Video Title: Heartwork
Description: Threesome on a rooftop
Episode: 2
Scene: 2
Start: 8:21
Video Title: Jiburiru II
Description: Threesome with two lesbians angels
Episode: 4
Scene: 2
Start: 19:10
Video Title: Kanojo x Kanojo x Kanojo
Description: Gymsuit-wearing threesome in the school infirmary
Episode: 2
Scene: 3
Start: 9:12
Video Title: Karakuri Ninja Girl
Description: Hermaphrodite threesome
Episode: 1
Scene: 1
Start: 13:19
Video Title: Last Train to Gropesville
Description: Threesome in a train station
Episode: 1
Scene: 4
Start: 20:30
Video Title: Learning The Hard Way
Description: Threesome with mother and daughter
Episode: 1
Scene: 3
Start: 18:14
Video Title: Leatherman
Description: Lesbian scene followed by threesome
Episode: 3
Scene: 2
Start: 8:28
Video Title: Maids in Dreams
Description: Group sex in a dungeon
Episode: 1
Scene: 1
Start: 10:44
Video Title: Marauding MILF
Description: MILF joins guy and his neighbor for a threesome
Episode: 1
Scene: 3
Start: 8:50
Video Title: My Brothers Wife
Description: Threesome with a mom and daughter
Episode: 2
Scene: 6
Start: 21:14
Video Title: Night Shift Nurses
Description: Nurse joins doctor and another nurse for sex
Episode: 5
Scene: 4
Start: 15:55
Video Title: Oshioki Gakuen Reijou Kousei Keikaku
Description: Woman awakens in a hospital bed and immediately has a threesome
Episode: 2
Scene: 4
Start: 12:00
Scene Length: 4:29
Video Title: Private Sessions
Description: Threesome, with one guy and two sisters while a girl videos it
Episode: 2
Scene: 2
Start: 16:04
Video Title: Private Sessions II
Description: Threesome on the school rooftop
Episode: 2
Scene: 4
Start: 12:20
Video Title: Rensa Byoutou
Description: Threesome with two large-breasted, lesbian nurses
Episode: 1
Scene: 4
Start: 14:30
Video Title: School of Darkness
Description: Hetero sex turns into a threesome, with surprise ending
Episode: 3
Scene: 2
Start: 34:41
Video Title: Sex Taxi
Description: Threesome and forced lesbian in the gym equipment room
Episode: 2
Scene: 4
Start: 19:48
Video Title: Sexfriend
Description: Student threesome
Episode: 2
Scene: 6
Start: 20:49
Video Title: Sextra Credit
Description: Guy forced to have a threesome with two teachers
Episode: 2
Scene: 2
Start: 6:25
Scene Length: 4:54
Video Title: Sexual Pursuit II
Description: Threesome with his sisters
Episode: 2
Scene: 3
Start: 19:52
Video Title: Sleazy Family
Description: Woman masturbates watching her sister and nephew fuck
Episode: 3
Scene: 1
Start: 1:03
Scene Length: 9:08
Video Title: Spa of Love
Description: Couple fucks then is joined for a threesome
Episode: 1
Scene: 1
Start: 0:00
Scene Length: 6:10
Video Title: Step MILF
Description: Threesome with his mother and sister
Episode: 2
Scene: 5
Start: 23:27
Video Title: Teachers Pet II
Description: Two teachers and a student have a threesome
Episode: 2
Scene: 2
Start: 18:10
Video Title: The Truth About Nurses
Description: Patient has a threesome with two lesbian nurses
Episode: 1
Scene: 4
Start: 20:21
Video Title: Virgin Auction
Description: Guy watches lesbians then joins them
Episode: 2
Scene: 2
Start: 19:38
