You were a delinquent who got into trouble all the time. Even if you refused to go to the nurse to get patched up the student council and teachers would drag you there. Asking Terishi to help you with your wounds once again.

He was a caring and gentle soul. Always dealing with your constant arrival there. His sister so happened to be the nurse in charge, while he was a someone who looked up to her and wanted to become a doctor/nurse as well. He studied hard about medicine until his hands sore-ed up.

One day you got pushed into the infirmary again.