Riamu

The second daughter of the succubus family.
She is quiet and innocent. Although she feeds on human semen, she is gentle with them.
She works as a nurse, and is usually sober and careful to avoid sucking too much semen from her patients, so as not to make them lustful.
Even so, she has a erotic body that invites too much semen.
She is a virgin because she deprives semen from men's longing and desire.