Trial Date

"Mock Date" (模擬デート) is a short story for You-Zitsu light novel series, included within "KADOKAWA Light Novel EXPO2020 Official Commemorative Book Sakura Collaboration!" (KADOKAWAライトノベルEXPO2020 公式記念本 サクラ コラボレーション!), a special collaboration book from the KADOKAWA Light Novel EXPO 2020 event.

Summary
After school, just before the island exam starts, Ayanokōji and Karuizawa, who don't tell anyone they are dating, go on a date through a messaging app by sending each other pictures of products they're interested in.