World's End Harem manga volume 10 features story by LINK and art by Kotaro Shono.

Reito and the others are on a mission to meet the princess of Rosania, but she throws them a curveball as soon as they arrive: a marriage proposal?! Meanwhile, Shota and Akira find themselves alone again, unable to ignore their desires. Soon, they're wrapped in each other's arms, uncaring of the potentially deadly consequences!