My wife is my neighbor's sexual partner, Mio Adachi NACT-070

My wife, Mio, and I were an enviable, loving couple. One day, I finished work early and came home feeling like I'd made a small profit, only to find a pair of unfamiliar men's shoes in the entryway. Although I had a bad feeling, I still secretly peeked into the living room, only to see my wife, with an unprecedentedly seductive expression, greedily draining the neighbor's penis… I wanted to look away, but my legs felt glued to the ground. Anger, the shock of betrayal, and an inexplicable restlessness churned deep within my chest. Even more shockingly, on my wife's phone, there was a video of Mio obediently offering herself to the neighbor. Realizing I couldn't tear my eyes away from the screen, in a state of mixed self-loathing and excitement, I lied and said I'd be working late, deciding to investigate—.