Ron Kamonohashi's Forbidden Deductions poster

Ron Kamonohashi's Forbidden Deductions (2023)

Animation · Comedy · Crime

Ron Kamonohashi was once regarded as a genius at the top detective training academy. But after a fatal mistake, he was expelled and forbidden to become a detective. Years later, police officer Totomaru Isshiki knocks on Ron’s door seeking help on a serial murder case. He finds Ron, now a messy-haired recluse, who agrees. Together, this mismatched detective team begins solving their first mystery!

IMDb rating: 7.2 (1,200 votes)
Episode average: 8.0 ↑ +0.8 vs IMDb
Seasons: 2
Streaming (US): Crunchyroll
Language: JA
Type: TV series

Rising trajectory: each season at least as good as the last. Rising Shows ranks whole shows by the shape of their rating trend rather than one average score, which is how you find a show that got better rather than a show that started well. See every Rising show in the explorer →

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Ratings refreshed Oct 3, 2026 · 2 seasons indexed

Cast

Seasons

Season 1 (2023)

7.99 avg 13 episodes 7.6 → 7.8 23 min avg

Mid-peak

Season 1 episodes - IMDb ratings
#	Title	Rating	Votes
1	The Case of the Metropolitan Serial Drownings	7.6	125
2	The Case of the Locked-Room Piggy Bank Theft	8.0	101
3	The Case of the Benizome Hot Spring Murder - Part 1	8.1	94
4	The Case of the Benizome Hot Spring Murder - Part 2	8.1	95
5	The Case of the Hand Collector	8.0	88
6	The Case of the Live Broadcast Murder	7.9	87
7	The Case of the Observatory Murder - Part 1	8.2	90
8	The Case of the Observatory Murder - Part 2	8.3	85
9	The Case of the Observatory Murder - Part 3	8.5	93
10	The Case of the Poisoned Latte	7.8	80
11	The Case of the Mad Chameleon Murder	7.8	78
12	The Case of the Yadagami-sama Murders (Part 1)	7.8	78
13	The Case of the Yadagami-sama Murders (Part 2)	7.8	77

Season 2 (2024)

8.05 avg 13 episodes 7.9 → 8.6 23 min avg

Season 2 episodes - IMDb ratings
#	Title	Rating	Votes
1	The Case of the Shibuya Apocalypse Serial Murders: Part 1	7.9	48
2	The Case of the Shibuya Apocalypse Serial Murders: Part 2	8.0	46
3	The Case of the Shibuya Apocalypse Serial Murders: Part 3	7.9	45
4	The Case of the Midsummer Beachside Stand Drowning: Part 1	7.4	44
5	The Case of the Midsummer Beachside Stand Drowning: Part 2	7.5	44
6	The Case of the Genius Composer Abduction: Part 1	7.7	44
7	The Case of the Genius Composer Abduction: Part 2	8.0	41
8	The Case of the Psychology Research Lab Murder: Part 1	7.9	42
9	The Case of the Psychology Research Lab Murder: Part 2	7.8	41
10	The Case of the Highland Auberge Serial Murders -- Part 1	8.2	35
11	The Case of the Highland Auberge Serial Murders : Part 2	8.8	31
12	The Case of the Highland Auberge Serial Murders : Part 3	8.9	35
13	The Case of the Highland Auberge Serial Murders Part 4	8.6	31

Ron Kamonohashi's Forbidden Deductions (2023)

Cast

Seasons

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