We Started a Threesome!! manga volume 3 features story and art by Katsu Aki.

Struggling to recover from a childhood of abuse, Emito attempts to find peace with his polyamorous partners Lia and Suisei. Together, the three of them free him from his coercive mother—but is it too late for happiness? Will they be able to return to life as it was? Just when the clouds seem to have lifted, Suisei discovers something troubling about Lia's health. The story of these three lovers and their devotion to one another reaches a dizzying, dramatic climax!

FINAL VOLUME