Hoshikuzu no Oyasumi

Hoshiai Ren and Tenmado Yuya are childhood friends and husband and wife. They have an incredibly cute son, Makoto, and the three of them live a dream-like life filled with sweet happiness. However, this life is kept in perfect balance due to a secret that Yuya holds. In fact, Yuya is not an Omega, but an Alpha, and Makoto was born to Yuya's twin brother, Yuuma.. A new dimension of Omegaverse filled with happiness and sadness! (Source: Libre, translated)