Yaoi stories with a significant age gap that plays into the plot.
1-18 - Tutor/teacher x student 19-26 - High schoolers and older men 27-36 - University/early career and older men 37-42 - Long-term relationships 43-47 - Forbidden love (guardians and family members' lovers) 48-52 - Neighbors/Roomates 53-72 - Meeting at work 73-78 - Authors
