Aooni the Blue Monster (2016)

Animation · Comedy · Horror

In most ordinary high schools, many stories and rumors float around—some scandalous, some happy and some...more macabre. One such example is of monsters lurking in an abandoned mansion outside of town. Such tales, however, prove too tempting to resist for Hiroshi and his friends Mika, Takeshi, and Takurou. They decide to brave the rumored dangers in order to investigate the manor and complete a test of courage. Each of them approaches the mansion with an overwhelming sense of dread. And when they enter, they come upon a blue monster named Ao Oni who attacks them. As Hiroshi and his friends try to solve the various puzzles in the mansion and escape their new blue nemesis, they find themselves meeting several horrible endings as they fail miserably.

IMDb rating: 6.1 (98 votes)
Seasons: 1
Streaming (US): Crunchyroll
Language: JA
Type: TV series

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Ratings refreshed Aug 19, 2026 · 1 season indexed

Cast

Seasons

Season 1 (2016)

7.52 avg 13 episodes 7.8 → 7.9

Rollercoaster

Season 1 episodes - IMDb ratings
#	Title	Rating	Votes
1	There Are Five of Us!	7.8	11
2	The Takeshi Power Plant	7.4	8
3	Confession	7.6	8
4	Aooni's Classy Day	7.4	8
5	Rococo Style	7.6	8
6	Elegy for the Boys	6.6	8
7	Puzzle Game	7.3	8
8	Iron Bars	7.9	8
9	Local Mascot	7.7	8
10	Supersonic Aooni	7.1	8
11	Aooni Switch	8.0	10
12	Opposite World	7.4	8
13	Trapped for 70 Years	7.9	8