Akira is a normal high school boy, but he nevertheless impulsively licks some drool left by the mysterious transfer student Mikoto. The next day he falls asleep with an inexplicable fever. After five days Mikoto suddenly comes to visit, and makes him consume her drool. The fever instantly vanishes, and Mikoto explains that he's suffering from "love sickness." She can transmit emotions through her drool, and the two of them are now bound together.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Mysterious Girlfriend | 2012-04-07 | 25 min |
| Season 1 | Episode 2 | A Mysterious Bond | 2012-04-14 | 25 min |
| Season 1 | Episode 3 | The Mysterious Test Tube | 2012-04-21 | 25 min |
| Season 1 | Episode 4 | Mysterious Girl Meets Girl | 2012-04-28 | 25 min |
| Season 1 | Episode 5 | A Mysterious First Date | 2012-05-05 | 25 min |
| Season 1 | Episode 6 | Mysterious Step Up | 2012-05-12 | 25 min |
| Season 1 | Episode 7 | Mysterious Flu | 2012-05-19 | 25 min |
| Season 1 | Episode 8 | Mysterious Sensation | 2012-05-27 | 25 min |
| Season 1 | Episode 9 | Mysterious 'This is just, I dunno...' | 2012-06-02 | 25 min |
| Season 1 | Episode 10 | Mysterious Adventure | 2012-06-10 | 25 min |
| Season 1 | Episode 11 | Mysterious Cultural Festival | 2012-06-17 | 25 min |
| Season 1 | Episode 12 | Mysterious 'Squeeze' | 2012-06-24 | 25 min |
| Season 1 | Episode 13 | Mysterious Girlfriend and Boyfriend | 2012-06-30 | 25 min |
| Visual Effects | Reiko Iwasawa | Color Designer |
| Art | Shigemi Ikeda | Art Direction |
| Sound | Tomoki Hasegawa | Music |
| Directing | Ayumu Watanabe | Director |
| Writing | Deko Akao | Writer |
| Visual Effects | Kenichi Konishi | Character Designer |
