SSSSSPPPPPLLLOOOOOOOOOGE! That is all.
LOL. It certainly is old school yaoi.
I suppose ... I'm not quite sure what you mean, though. Old school drawing style (1990s - early 2000s Weiss Kreuz style), or the story (completely implausible excuses for sex), or both, or neither? I'm confused.
SSSSSPPPPPLLLOOOOOOOOOGE! That is all.