When I ask this, I'm wondering how far a teenager and adult can go until the scenes fade to black. Would kissing the neck be considered something they are allowed to do or is that a "sex scene" by Iwaku's terms? What about hands sliding up the waist and into the shirt, as long as the breasts or whatever isn't groped or teased? How about hands groping the butt with clothing on? How far is it allowed to go before everything needs to fade away?