A tanuki-like species from Trials in Tainted Space home to the moon Jitafore. In lore, there are only male and hermaphrodite Kui-tan, no females (doesn't prevent artists to draw them as such).
The most unique parts of a Kui-tan’s reproductive system are their testes. Their masculine reproductive systems constantly produce sperm and their unique gonads are capable of storing it all, swelling up as they do so. A Kui-tan who goes without release long enough may find himself immobilized by their own beachball-sized genitalia. Ingesting another’s semen has the effect of triggering a 'cum-cascade', the immediate production and release of huge amounts of cum.

For more information: https://wiki.smutosaur.us/TiTS/Kui-tan