Pardon the Intrusion, I'm Home!

Having just moved into a new apartment building, Yui Hanasaka makes a customary visit to greet her neighbor. When she learns that he is an upperclassman at the university she aspires to attend, she asks for his help to pass her entrance exams. Meanwhile, Natsuki Momohara decides to visit her older brother, who lives alone in an apartment in Tokyo. Elsewhere, aspiring singer Moka Aoshima reunites with her childhood friend, who is a hopeful novelist. Three stories, although seemingly unrelated, contain the same essence: strings of fate will bind together those who share the same destiny, and one needs to look no further than a single apartment room.

After a long day, high schooler Shintarou Tokumitsu’s plans for relaxing in his studio apartment take a turn when he discovers an angel on his balcony. The divine girl, Towa, reveals she’s there to study humanity, and yet despite his skepticism, he agrees to put her up. Prepare for the most heavenly and high jinks roommate experience of all time!

Fumihiko Matsumaru is an average salaryman with no girlfriend. He invited his colleague Miss Tanaka to a movie but was stood up. Right at the time he was about to toss tickets into a trash can, a cute girl appeared and asked him not to waste those two tickets. After movie and dinner, he escorted her home and found they live in the same neighborhood, yet unfortunately her apartment caught on fire hours later. Having nowhere else to stay, rookie seiyuu Aka Onda moved to Matsumaru's place, and the two had started a "more than friend but not yet lovers" relationship under the same roof while keeping this secret from their employers.

Usa, a high-school student aspiring to begin a bachelor lifestyle, moves into a new apartment only to discover that he not only shares a room with a perverted roommate that has an obsession for underaged girls, but also that another girl, Ritsu, a love-at-first-sight, is living in the same building as well!