Wonder Waifu: Ero-Hero NTR is a title in which the delicate balance between the Pure Chapel and the treacherous Jewel Organization hangs in the balance, and the power of sincere affection is the main weapon, although in this case it is replaced by pure LUSTOVY! Against the backdrop of this confrontation, our protagonist remains vigilant, not allowing the current era of the world to lull his vigilance. Instead, he devotes himself to rigorous martial arts training at a local dojo, all the while making no secret of his attraction to Yuumi, the instructor's stunning wife. The attractiveness of the person is undeniable, be it her lush breasts, alluring curves, or simply the sound of her voice, which sends shivers down our hero’s spine.

However, sadly, it has already been taken away, and the hero of Wonder Waifu: Ero-Hero NTR can only admire it from afar. However, one fateful day, fate takes an unexpected turn when a lady unexpectedly appears at the dojo, injecting a burst of energy into our protagonist's routine. But just when everything seems to be looking up, chaos ensues when the sinister Jewel Organization reappears and our protagonist finds himself inexplicably targeted. Amidst the confusion, a confrontation with a provocatively dressed attacker nearly ends in disaster, but he is saved by the timely intervention of Pure Capella, an iconic heroine who has not lost her appeal over the years.