[Kariya (Calipur)] Kariya-teki Nandemo Shite Kureru Katei Kyoushi no Onee-san ni [MTL]

An earnest male student discovers his bright‑minded female tutor is eager to indulge his curiosity, pulling down her shirt to expose her ample chest while whispering promises of study rewards. After a few months of teasing exchanges—"You really love my chest, huh?" and "Back to studying when you're done"—the pair move from classroom banter to intimate encounters, counting each thrust as they explore how much the student can endure. The story concludes with the tutor suggesting a more frequent schedule, "bumping us up to three days a week," as the student blushes in reluctant compliance, sealing their secret pact.