After their trip to Rainbow Forest, Gareki asks to drop by Karasuna, where they run into an old acquaintance of his. From this enounter, Nai and Yogi learn more about Gareki's past.
| Title | Opus 4: Evening Swallow |
|---|---|
| Genres | Animation Mystery Sci-Fi & Fantasy |
| Release Date | 2013-04-25 |
| Episode Runtime | 00 Hours 24 Minutes |
| Season Number | 1 |
| Episode Number | 4 |
| Production Companies | Manglobe |
