Summer is finally here and the heat is reaching a breaking point! With his parents halfway across the world on an overseas trip, Keiichi thought he was in for a relaxing break. Instead, he is left at the mercy of his five younger sisters, and they are definitely not interested in playing board games. The gloves are off and these girls are making their moves with zero hesitation. It is a full-on tactical assault of affection that would break even the strongest man. Keiichi quickly realizes that there is absolutely no way he can hold back against such aggressive advances. Get ready for a wild ride in Nano Machine EN, where the comedy is loud, the situations are steamy, and the family dynamics are anything but ordinary. If you are looking for a high-energy ecchi series that turns the heat up to eleven, you have found your new obsession. Join us as we follow Keiichi through a summer vacation he will never forget.

ecchi, comedy, harem, romance, siblings, summer, manga, spicy, hilarious, slice of life