Lets just use a dog year on him. Usually its 1 human year = 7 dog years. So if he's like there for 4 years, he'd be 28 XD (=・ω・=)
This logic....... As a dog owner ... And your name
All those years of reading yaoi has finally messed up with your frontal lobe huh
no you're right this is actually how the authors do the math but some of them don't care and just decide randomly, usually in this kind of setting tho where the story is clearly a porn with plot one it will not matter
How the hell you even calculate age gap on this one