Darke Rayne's manga / #age gap(37)

High school kid living in a love hotel tricks an AV director - who is gay - because he thinks the AV director is after his younger brother - who is in middle school. Ends up falling for the AV director anyways. So beautiful <3

Spin off to Hitorijime Boyfriend. About the elder brother - who's a maths teacher - and the best friend - who's been an "errand" boy for the elder brother.