Hey! I just recently went through this with staff- the light sabers are not enough of a censore. You need to cover things so the shape of a dick isn't visible. I turned the "light sabers" into a whited out area to make it vaguer. I have seen other comics use pixilation, or sticker censors. You can always design things so they are censored more naturally by the setting.
Anywhere penetration is happening has to be covered.
Also worth noting: Comics that are too mature may be pulled from the app, because Apple's rules for the App Store are more strict, in which case a comic can still be on the tapas website. You should be warned of this by staff, and have a chance to adjust things to remain in the app. If your comic is super mature, you might want to plan for being web only, or consider that possibility.