Plot to fuck the neighbor's brother of a difficult neighbor

The plot to seduce the neighbor's daughter of the grumpy neighbor. We, who have been dating with the intention of marriage since college, have recently moved into a new house, but whenever there is the noisy neighbor Saeyama, he has been complained about being a nuisance. It's a dull way of living with caution, but Saeyama, who has reached the limits of patience, attacks to shut the dull mouth.