This is from Mammon's UR "The Perfect Date" (from the Valentine's Day Showdown pop quiz event)
Not the full devilgram story

credits to NTT Solmare
https://shallwedate.jp/obeyme/en/

Shall we date? series: Obey Me!

Official website: https://shallwedate.jp/obeyme/en/
Instagram:   / obey_me_official  
Twitter:   / obeymeofficial1  

• Android
https://play.google.com/store/apps/de...

• iOS
https://apps.apple.com/app/id1477167654