JUY-405 The Counterattack of the Guy Who Became the Most Hated G in the World Sorano Shiiina

I'm a NEET living in an old rental apartment. My neighbor is a married woman, but she's always cold towards me. One day, a "G" appeared in my room, and as I tried to exterminate it, I hit my head and passed out. When I came to, I had turned into the "G"!? What should I do... But wait? The "G" can peek at the neighbor's wife!? I immediately went to spy on her, and she was cheating! Now that I know this, it's time for "G様" to strike back...! But how do I turn back into a human...?