MIRD-198 _Secretly in apartment number 69 there are 5 good sisters but when their parents are away

For a long time, house number 69 in the apartment complex, on the 18th floor, has no one renting it. The rent is also quite cheap compared to the general space in the company, but absolutely no one, especially men, can rent it for a week. The apartment management board found it a bit strange because there were only 5 girls around that apartment: Elly Akira, Nozomi Arimura, Yurika Aoi, Miori Ayaba, Azusa Misaki. "The girls at home are all very well behaved" according to the management board. To investigate this incident, SEXTOP sent Mr. Nam to be a tenant in the above apartment. However, after 3 days of staying at the boarding house, Nam showed signs of physical weakness and asked to return home and take a leave of absence for medical treatment.