Research has identified several factors contributing to male infidelity, including:
The combination of seiso and kyonyuu creates a dissonance that drives the eroticism. The "pure" face suggests innocence, while the "voluptuous" body suggests fertility and sexual capacity. In the context of the narrative, the kyonyuu element often serves as the catalyst for her theft. It is the physical trait that attracts the antagonist, reducing the wife’s complex identity (her loyalty and love) to a single, objectified asset that the protagonist cannot fully "defend" or "monopolize." The physical form becomes a burden to her purity, inviting the very corruption she resists. tsuma wa konya mo ubawareru seiso kei kyonyuu full