Houbu Shengnü

When he was sent to another world, he just wanted to be the Hero so he could easily pick up girls. But he was bamboozled by a black-hearted angel. He got his wish to have all sorts of beautiful women throw themselves at him. But he wanted to be able to get it on with those women, he didn't want to be transformed into a loli! And he didn't ask to be involved with all that troublesome plot, either! Why is this so hard!!!

(Source: Bilibili, translated)