Yusuf appears in Telepath RPG: Servants of God.
Before she changed her name to Rahel, Nihira had an arranged marriage to Yusuf, the son of another, slightly wealthier, Rubat family. After Yusuf began savagly beating his fiancée, Nihira ran away to Ravinale. When his fiancée ran away, Yusuf was left humulated among the Rubat.
"Filthy cur! I wouldn't allow your flea-bitten body back into my bed if you paid me back my dowry ten times over!"