Accelerando: Datenshi-tachi no Sasayaki

Hentai "Speeding up the pace" from Pink Pineapple Studio is another animation from the Stringendo series.

The plot centers on Tamaki, a charming girl who works in a coffee shop. She has a secret: she meets her lover Kuono right at the workplace. However, she doesn't know that every time she sees Kuono, their mutual friend Ohashi is also in the coffee shop, watching them.

Kuono decides to set up a test for Tamaki and Ohashi. But it turns out to be more difficult than they expected.