Oegyehaengseong Wangjanimui ♥♥♥

Kim Pyeong-Beom is an ordinary person who lives a common life, but one day an alien with the appearance of a teddy bear lands in his room! From that moment on, he will accept that intercultural exchange with BR, the fifth prince of Planet KKRY… But how will he end up becoming the prince's sex education manager too?
(Source: Lezhin, translated)