El hombre invisible y su futura esposa, 5

The invisible Tōnome and the human Yakō have finally decided to move in together! So… they go to visit each other's families. Despite how they're affected by each other's eccentricities, they both discover unexpected things about one another… Is a battle of infidelity about to erupt at the detective agency? And is it all for a job? This is the fifth installment of the blushing office romances where they're slowly starting to look like a married couple!