A man comes onto a woman quite strongly while in a hotel room. He tries to forcibly kiss her and she stops him by casting a magic spell. Since it's played for laughs, the implication of sexual assault can easily fly over one's head.
Very mild with few exceptions. Keiichi and Belldandy live together, but their relationship is rather chaste. Belldandy's older sister Urd is rather sexualized, with revealing outfits and trying to make Keiichi take his and Belldandy's relationship further. One episode involves Belldandy taking a love potion and as a result, totally coming on to Keiichi. All played for laughs.