Ran's sexy revenge (Patreon)

Ataru is always the best target for Ran's revenge towards Lum.
After school hours, the pink-haired girl lured the boy in a empty classroom and gave him a sexy handjob, make sure that the other alien girl reaches them in the middle of the action.
Lum opens the door right after Ataru came on Ran's body and the situation suddenly become electrifying.

Based on "Urusei Yatsura" manga/anime show. 

Line art, clean and wet version included.