La historia del manga se desarrolla en una época en la que los “ajin”, informalmente denominados “demi”, han comenzado a ser aceptados en la sociedad humana. Nuestro protagonista es Tetsuo Takahashi, un profesor de Biología que debe dar clases a tres demi con la esperanza de llegar a comprenderlos mejor.
| 1 |  |
Takahashi Tetsuo Wants an Interview2017 | |
| 2 |  |
Dullahan-chan Wants to Be Coddled2017 | |
| 3 |  |
Succubus-san Is a Real Adult2017 | |
| 4 |  |
Takahashi Tetsuo Wants to Protect2017 | |
| 5 |  |
Snow Woman-chan Is Cold2017 | |
| 6 |  |
The Takanashi Sisters Are Undeniable2017 | |
| 7 |  |
Succubus-san Is Inquisitive2017 | |
| 8 |  |
Demi-chans Want to Learn2017 | |
| 9 |  |
Demi-chans Want to Try2017 | |
| 10 |  |
The Dullahan Surpasses Space-Time2017 | |
| 11 |  |
Demi-chans Want to Support2017 | |
| 12 |  |
Demi-chans Want to Swim2017 | |
| 13 |  |
Desconocido |