Love Pistols vol. 5 (yaoi manga)

A somewhat peaceful family reunion turns dismal as a mysterious man comes to whisk Haigashira and his son away. We soon learn of how Haigashira and Seth met and had a shaky sexual relationship. Haigashira is what’s known as an Androgynous, meaning he’s taken medication to transform his body into a female. Seth, the last remaining Wing Lord, is determined to have Haigashira (a bat) bear his young. Seth takes Haigashira to his home in Saudia Arabia and find out he’s actually shown up to take Haigashira as his proper wife.