Since it's not included in the warning on the page, i don't think any nsfw is planned as of now. Things may change though! Only way to find out is to have the creator answer..
Heya.
Just wanted to know, do you plan to add an SFW filter or optionnal route when said content will arrive ? (I won't comment subjectively on it ; When there's no filter, I'm simply SFWing what need to be with photoshop on my very own end without second-guessing anyone, but it's nice to know in advance which VN need it or not. Heard it make it easier for voicing streamers and such sometime, though)