A manga from the "Witch's Revenge" series in which Princess Tiara gets tickled by aliens.
This is a reworked version of an old analog piece that the author seems to have drawn back in their student days.
Includes 1 cover page, 1 cover variant without the title, and 18 monochrome story pages.

[The Story So Far]
Aliens have descended upon Earth.
They had been wandering the universe with a single purpose: to absorb energy from the mucous membranes of mammals, and to implant their offspring in females with healthy wombs.
It was then that Princess Tiara, the most beautiful maiden in the kingdom, was unluckily out for a stroll and was captured.
Unlike on other planets, there was one misfortune in store for Earth's mammals.
Whenever these aliens drain their energy, they are overwhelmed by an intensely ticklish sensation. What's more, every scientific stimulus applied to their bodies is perceived by Earthlings as unbearable tickling.
The aliens, who don't even know what "ticklish" means, were baffled by Tiara's reactions as she writhed with laughter, yet found themselves intrigued.
After thoroughly examining Tiara through tickle-reflex experiments and cleansing her entire body, they were finally ready to mate.