YAMAAKI Douton is the name of a unit featuring the wife's original work and the husband's art.
From One Peace Books, the publisher of the English version of X Saibou wa Fukaku Iki o Suru - Energy, called Breathe Deeply:
Doton Yamaaki is the name for a husband and wife story telling team. Together they have won numerous awards for graphic fiction, including the Chiba Tetsuya Young Dept. Award and the Manga Open’s Watase Seizou Award. Their work has been serialized in numerous magazines, such as Mister Magazine, Morning, and Kindai Mahjong Gold. This is their first work to be translated into English.