Doutei Yuusha no Harem Maou Toubatsuki

To defeat the Demon Lord, the hero Alvin was summoned by the king. The first to join his party is the elven priestess, Rishel. As soon as they met, she invites him to the inn before the other companions arrive... It seems like she has another purpose besides planning to defeat the Demon Lord!? To seduce somewhat shy and virgin hero... the priestess (elven girl), the warrior (beast girl), and the assassin (tan-skinned girl) will come on to him with all of their charms ♥ The isekai romantic comedy where everything is at stake, begins!! (Source: Takeshobo, translated)