I've Learned Something I Wasn't Meant to Know. I Need to Hide Myself Before I Disappear Without a Trace

Hatagaya Academy goes on a trip near the ocean, and Souta meets Daishikyougawa Kurumiko there. Souta enlists the help Mimori Seiteikouji, the granddaughter of the chair. Souta and Mimori go on a date as compensation.