Books in the I Think Our Son Is Gay series in order

"Tomoko is no stranger to change. With two boys in high school and a husband who's away on the job a lot, being able to adapt to new situations comes with the territory. Now, Hiroki is throwing himself into his afterschool activities with bestie Daigo despite nursing a potential broken heart, and he's even found a new hobby: Dancing! Things also come to a head with Asumi, Hiroki's childhood friend, who's been crushing on Hiroki since probably forever! And when dad Akiyoshi gets transferred back for work, the temporary family of three returns to being a family of four! How will Tomoko and the boys adjust to Akiyoshi's presence?!"--