Here is a lust planet, but there is the love, too.

On a distant planet, a young man encounters a pleasure-giving tentacle and his destiny. The start of a super authentic sci-fi BL!

Kaneda, a member of the research team on the planet "RED," encountered "Argo," a creature unique to RED, in a prohibited area. Argo was in heat, and Kaneda became helplessly entangled with Argo, as he drowned in the pleasure of being taken by Argo's tentacles. Shiraishi wanted to save him somehow, but what is the terrible conspiracy surrounding Kaneda?

(Source: arca comics, translated)