Iutjim Yubunyeoneun Oegyein

Just after moving to a new apartment complex, Jeong-Tae meets his sexy next door neighbor, Yu-Mi. To his shock, he discovers she is an alien with an insatiable thirst for semen, and the two begin to enjoy secret sexual encounters. Complications soon arise when Yu-Mi’s husband comes back from his business trip, but while Jeong-Tae knows it’s wrong, he just can’t get the sexy alien next door out of his mind!

(Source: Lezhin X, edited)