SY practicing fingering on him, SY working his fingers in after eating his 'pussy' out, licking his 'clit' as he does. Binghe gradually training him until he's 𝘱𝘦𝘳𝘧𝘦𝘤𝘵.

slow boiling this het-brained twink until he's an obedient and well-trained fucktoy for Binghe's personal use