Condom

You always have to protect yourself when having sex and that is why they remind us in porn doujinshi where this category has the name of condom, of course, many of these comics are about incest and the most logical thing is to use a condom without going to fuck you your mother or sister, but we also have schoolgirl couples who use condoms to avoid being filled with semen, in other words, we have xxx manga of all types in this category but being protected