Yoshida is a tiny, frail high school graduate who became an unwilling manager of an apartment complex when his father, the former manager, injured himself. Unbeknownst to him, this apartment complex houses quite a few women with very... unusual sexual preferences. This becomes a problem when a mysterious entity begins giving Libido Cloth to these women—skimpy outfits that give them superpowers and cause them to go on lewd rampages! Will Yoshida be able to stop them? (Source: MU)

When high school student Hinata Sunohara was summoned to another world to defeat the Demon Lord, he promised to marry Mariabelle, a beautiful dark elf. But once his mission ended, Hinata was returned to Earth, leaving Mariabelle devastated. After a month back in Japan, Hinata's life has seemingly gone back to normal. However, everything changes again when Mariabelle suddenly appears in his room! Swearing to remain by his side forever, she begins living with him. As her obsessive love grows by the day, Mariabelle wishes to protect Hinata from any threat and ensure that he only has eyes for her.

Tomoatsu Naoe leads an ordinary life working as a massage therapist, but this changes when he encounters a peculiar client named Erufuda. During her visit, Naoe discovers her secret: she is actually an elf! After leaving her world, Erufuda fell in love with junk food and now cannot return home because of her weight gain. Naoe decides to help the elf with dieting so that she can eventually go back to her world. Although Erufuda puts in the work and reaches her goal, it does not take long for Naoe to stumble upon her again—and she has regained the lost pounds. As Naoe continues to give her advice, the two begin encountering other people from another world, all with the same desire to lose weight.

Episodes 13 and 14 of Elf-san wa Yaserarenai. that aired on the web and were later included with the Blu-ray release of the series.