My Dearest Patrolman manga volume 3 features story and art by Niyama.

FINAL VOLUME!

Shin and Seiji have been living together in domestic bliss for over a year, but Seiji's upcoming birthday is the first time Shin will get to celebrate with him. Shin wants to make the day extra special for his boyfriend, but his romantic idea is turning out to be a serious challenge, especially since Seiji is terrible at providing a decent wish list! With the odds stacked against him, Shin must rely on his police training to help him on the most important mission of his life - finding the perfect present for his boyfriend!