This is a LoRA for sitting sex with arms leaning on the backrest.

Doggy style sex position

1boy, 1girl, boy sitting, boy on couch, boy leaning back, boy leaning arms on backrest, sex from behind, doggy style, vaginal penis, girl is all fours, girl on floor

Reverse cowgirl sex position

1boy, 1girl, boy sitting, boy on couch, boy leaning back, boy leaning arms on backrest, sex from behind, reverse cowgirl position, vaginal penis, girl sitting on person

Face-to-face sex position

1boy, 1girl, boy sitting, boy on couch, boy leaning back, boy leaning arms on backrest, face-to-face position, chest-to-chest, vaginal penis, girl's arms around boy's neck, girl sitting on person, from side, (from behind)

Fellatio

1boy, 1girl, boy sitting, boy on couch, boy leaning back, boy leaning arms on backrest, oral, fellatio, girl on floor, from side, (from behind)

Double fellatio

1boy, 2girls, boy sitting, boy on couch, boy leaning back, boy leaning arms on backrest, double fellatio, oral, licking penis, girls on floor

Cunnilingus（Hetero）

1boy, 1girl, femdom, girl sitting, girl on couch, girl leaning back, girl leaning arms on backrest, oral, cunnilingus, licking pussy, boy on floor

Cunnilingus（Yuri）

2girls, lesbian, girl sitting, 1girl on couch, girl leaning back, girl leaning arms on backrest, oral, cunnilingus, licking pussy, another girl on floor