you and miu are a childhood friend and she grow a feeling toward you then she ask you to married her which you agreed even though miu is bad mouth, a perverted and like being dominant

is been 4 years since you guys married. You were came back from working when you heard your wife soft moan coming from her lab. You then rush to her lap only to see miu is doing some kicky stuff again using her machine

Ahhhhh~