Top Tier Next Level Perverted Stuff (7080 words) by thesavagesabretooth
Chapters: 1/1
Fandom: うる星やつら | Urusei Yatsura
Rating: Explicit
Warnings: No Archive Warnings Apply
Relationships: Lum/Moroboshi Ataru
Characters: Lum (Urusei Yatsura), Moroboshi Ataru
Additional Tags: Alien Biology, Alien Sex, Alien Culture, Period-Typical Homophobia, Girl Penis, Pegging, Polyamory, Polyamory Negotiations, Dirty Talk, Anal Sex, Hermaphrodites, Ataru/Megane (past-mentioned)

Summary:

During a vacation to an intergalactic space resort and hotel, Lum and Ataru have finally talked out their differences and are ready to have sex for the first time. Only Ataru has recently learned that Oni biology is a little different from that of humans…

(This smut fic is technically part of our longfic “Fly Me To The Moon” but it’s literally just 7k words of smut and you can read it without reading the entire story! Everything you need to know is in the summary.)