Some bondage (BDSM) scenes referenced in the show. But, not too sexual.
In the first minute of episode 1, the lead character is straddled by a lamia. You can see her nipples. He attempts to grab her tail to make her get off of him but this results in the lamia having an orgasm. After this is a theme song with fanservice shortly followed afterwards by another scene with bare breasts flashed.
The show is strictly fanservice meaning that the show is based around appealing to the desires of the audience. This has an abundance of sexual innuendos uncensored and censored. Multiple sexual scenes in every episode.
Frequent strong sexual innuendo and partial nudity. In the uncensored version, bare breasts are fully visible/detailed with nipples, while the television version has nipples obscured.
The main character is repeatedly questioned on rather he's had sex with any of the monster girls, which he always denies.