Isaac didn't bother to try and tease Stiles, or draw it out. That just wasn't who he was. He crawled down between the slave's legs, settling himself against the bedsheets. They smelled of Stiles and his arousal, and it made Isaac's own cock press against the front of his pants.
Isaac's hand moved down to the base of Stiles' erection, as his lips parted around the head. As soon as they were over the crown he started sucking gently, soaking it with saliva. Isaac loved having his mouth filled, and although he wasn't a prideful person, it felt like he had something to prove.