Seeing the Citrus anime that aired in Winter 2018 got me thinking. This anime has so many ecchi scenes. Yuzu and Mei kissed and did so many perverted acts.
Had this been a boy-girl kissing scene, it might be considered okay and normal enough. Problem is, Yuzu and Mei are both female, thus their kissing scenes are ecchi. Taketatsu Ayana (Yuzu's seiyuu) and Tsuda Minami (Mei's seiyuu) would have to make lots of perverted noises for those scenes.
This reminds me that High School DxD also has Itou Shizuka (Himejima Akeno's seiyuu) and Hikasa Youko (Ria's Gremory's seiyuu) make lots of similar noises for the recording.
While Itou Shizuka is known to be a seiyuu for eroge, even she was embarrassed when she had to do many perverted noises during recording in front of many other seiyuus (I read it somewhere but forgot where, will update with link if I can find the article again). Itou-san went as far as crying to Asakawa Yuu (voice actress of the Megurine Luka vocaloid, and seiyuu for many eroge) due to the embarrassment.
It should also be noted that both Itou-san and Asakawa-san used pseudonyms for their eroge VA work. This suggest that such work is not really desirable, or at least, it definitely is not at the top of desirable jobs to do. Hanazawa Kana doesn't do eroge voice acting, for example.
Now, returning to Citrus, Taketatsu Ayana and Tsuda Minami were not fresh, newly-graduated seiyuu. They have worked in the industry for quite a long time and have built names for themselves.
Does this means that anime with many perverted scenes pay their seiyuu more?
Note: To make things clear, by "ecchi" I mean the perverted noise(s) the seiyuu has to make for the scene, and not the perverted images that go with them.