Kyuuketsuki-chan x Kouhai-chan  

Vampire & Junior, Vampire and Underclassmen, 吸血鬼ちゃん×後輩ちゃん, Kyuuketsuki-chan to Kouhai-chan, Vampire-chan x Junior-chan

Sarah Fujisaki is a sophomore in high school at Fujigamine Academy. She's always been reserved and anxious, so much so that her face turns bright red when someone calls her name. Despite her efforts to make friends at the academy, she hasn't been successful. After nearly a week at Fujigamine Academy, Sarah runs out of ideas until she meets Iris Kagen, the third-year student council president. Iris is stunning, diligent, and admired by all; she values her privacy and doesn't let many people get close to her. However, Iris harbors a secret - she's a vampire. One day, unexpected circumstances lead Iris to suck Sarah's blood, marking her as Iris' bride. As they grow closer, Sarah develops feelings for Iris. However, being Iris' bride isn't as simple as it seems, and Sarah may have to give up more than her blood to stay with her.

Kyuuketsuki-chan x Kouhai-chan was published in German as Vampire x Junior by Altraverse from April 18, 2019, to May 15, 2020.