Performer
A performer whose catalogue work here is strong, with the fuller case still to be made.
Nutevio rank
#28046
of 909177 performers
Top 5%
Show Kasamatsu works on versatility rather than volume, and the catalogue keeps proving that the quieter choice was the correct one.
The essay
Our editors on the work, the patterns and the reason this body of work holds together.
Show Kasamatsu appears in 6 films in the Nutevio catalogue, and none of them would work the same way without Show. Rurouni Kenshin: The Final is the clearest case: a film rated 7.7 by our editors, where the performance carries weight the script only implies.
The recognisable elements are versatility, transformation, quiet performance. Watch two of these films back to back and the method separates from the material — the same instrument, tuned differently for comedy, history, thriller. It is a style built on what is withheld as much as what is played.
Working with , Show Kasamatsu helped set a standard other performers now audition against. Awards bodies have been slower than the work, which is usually the sign of a career built on choices rather than campaigns.
Rurouni Kenshin: The Final (2021) · Rolling Marbles (2020) as Keisuke · Good News (2025) as Denji
Career snapshot
Ranked #28046 of 909177 performers tracked in the Nutevio library.
Films in Nutevio
6
2019–2025
Career length
6 yrs
Measured across our catalogue
Academy Awards
—
Unknown
Oscar nominations
—
Unknown
Highest Nutevio score
7.7
Rurouni Kenshin: The Final
Average Nutevio score
6.5
Across catalogue work
Highest IMDb rating
7.7
Rolling Marbles
Most frequent director
—
Longest collaboration
—
Most common genre
Drama
3 titles
Average runtime
1h 53m
Across catalogue work
Golden Globe wins
—
Unknown
Nutevio metric
Ten weighted categories, applied identically to everyone we cover.
Nutevio Performer Score
6.8
out of 10
A performer whose catalogue work here is strong, with the fuller case still to be made.
Nutevio metric
Cultural impact and legacy, measured separately from craft — how far the work travelled once it left the cinema.
Nutevio Influence Score
6.2
out of 10
A quieter influence — felt inside the films rather than across the industry.
How far the work travelled past the people who saw it first.
What survives once the release-week conversation has burned off.
Institutional acknowledgement, weighted but never decisive.
Years of chosen, relevant work rather than years merely employed.
Statuettes, read as evidence rather than verdict.
Roles named without needing the film named alongside them.
Directors who wrote parts because this performer existed.
The reading other performers now have to answer.
Actor DNA
A fingerprint derived from the roles themselves — register, range and the kind of film they carry.
The shape of a career
Every performance plotted in time. Hover a point to read the title behind it.
Peak years
Where the scores, the awards and the sheer volume of work agree with each other.
Best decade
2020s
7.4 average MV
The 2020s are where the work and the material meet. Good News, Rurouni Kenshin: The Final, Rolling Marbles — the run our editors reach for first when the argument is about range rather than fame.
Highest average Nutevio score
2020s
7.4
Across 3 catalogue films in this decade, our scores never drop below the level a career is judged on.
Highest average IMDb rating
2020s
7.4
The public agrees most strongly about this stretch — useful context, and occasionally a decade behind our own reading.
Most awarded era
2010s
0 Academy Awards
Statuettes for the films themselves, which is the honest way to read an ensemble career. My Father, the Bride, My Girlfriend Is a Serial Killer, I Was a "Secret Bitch".
Most productive era
2010s
3 films
The busiest stretch of the catalogue — volume that reads as appetite rather than availability.
Range, mapped
Genres down the side, decades across the top. Warmer cells mean stronger titles.
| Genre | 2010s | 2020s |
|---|---|---|
| Drama | 5.31 film | 7.72 films |
| Action | — | 7.71 film |
| Thriller | 6.51 film | 6.91 film |
| Comedy | 5.31 film | 6.91 film |
| Crime | 6.51 film | — |
| Romance | 5.62 films | — |
| Horror | 6.51 film | — |
Chronology
Firsts and peaks
The turning points, in the order they happened.
First film in Nutevio
Where our catalogue meets this career, as Midori.
Highest rated performance · Career peak
2020Rolling Marbles
7.7 on the Nutevio scale, the top of the catalogue for this performer. Weighing billing against the film's own quality, this is the point where everything aligned at once.
Most recent film
2025Good News
The current state of the argument, as Denji.
Our order
Every performance in the catalogue, ordered by Nutevio Score.
Every title
Filter by genre or decade, and compare any two titles side by side.
6 of 6 films
Directed by Unknown
as Haruko's Older Brother
Directed by Unknown
From the library
Every movie and TV credit stored for this name in the Nutevio catalogue — filter by media, role or sort by rating.
Loading credits…
The defining work
#1
Keisuke
Rolling Marbles (2020)
Performance score7.7
The performance the rest of the career is read through. Keisuke gives Show Kasamatsu a structure to work against, and the film hands over its centre of gravity without hesitation.
View movie#2
Rurouni Kenshin: The Final
Rurouni Kenshin: The Final (2021)
Performance score7.5
Rurouni Kenshin: The Final asks for something the previous films did not, and gets it. The role is played without a single line of pleading for the audience's sympathy — which is exactly why it lands.
View movie#3
Denji
Good News (2025)
Performance score6.8
Good News asks for something the previous films did not, and gets it. Denji is played without a single line of pleading for the audience's sympathy — which is exactly why it lands.
View movie#4
Haruko's Older Brother
My Girlfriend Is a Serial Killer (2019)
Performance score6.7
My Girlfriend Is a Serial Killer asks for something the previous films did not, and gets it. Haruko's Older Brother is played without a single line of pleading for the audience's sympathy — which is exactly why it lands.
View movieStart here
A guided path through the work, ordered so each film explains the next.
Best entry point
as Keisuke
Start here. Rolling Marbles is the clearest statement of what Show Kasamatsu does — accessible, 95 minutes, and rated 7.7 by our editors. No context required.
Our editors order this path by accessibility first and chronology second. You meet Show at the most legible performance, then move forward in time so each film reads as a response to the one before it rather than a repetition of it.
My Girlfriend Is a Serial Killer (2019)
Same director as Rolling Marbles, different problem to solve. Watching them in order shows how much of the effect was the collaboration.
My Father, the Bride (2019)
Same director as My Girlfriend Is a Serial Killer, different problem to solve. Watching them in order shows how much of the effect was the collaboration.
Rurouni Kenshin: The Final (2021)
Same director as My Father, the Bride, different problem to solve. Watching them in order shows how much of the effect was the collaboration.
Good News (2025)
Same director as Rurouni Kenshin: The Final, different problem to solve. Watching them in order shows how much of the effect was the collaboration.
Company kept
The directors and performers this career keeps returning to.
Not enough analysed work in the catalogue yet. This section fills in automatically as titles are imported.
Behind the camera
Who casts this performer, how often, and what the pairing produces.
Six degrees
Follow the thread outward — director, film, co-star, and the film after that.
Categories of our own
Six editorial categories we apply to every performer we cover.
Most rewatchable
Rurouni Kenshin: The Final
The one that survives a fourth viewing. Nothing in the performance depends on surprise, which is why it keeps paying out.
Most emotional performance
Rurouni Kenshin: The Final
Grief played at conversational volume. The film never asks the audience to cry; the performance simply makes it difficult not to.
Most influential performance
Rolling Marbles
as Keisuke
You can hear this reading in other actors' auditions a decade later — the surest measure of influence there is.
Best ensemble performance
Rurouni Kenshin: The Final
Work that makes everyone else in the frame better without ever pulling the camera towards itself.
Career defining performance
Rolling Marbles
as Keisuke
If the career had to be argued in a single scene, our editors would pick one from this film and rest the case.
In their films' words
“You can build a whole film around a performer who knows when not to speak. Show Kasamatsu has known it for a long time.”
Head to head
Put two careers on the same scale and see where the argument actually sits.
Ours alone
Recognitions handed out by this desk, on criteria no awards body uses.
Modern Classic Performer
Awarded
Defining performances delivered inside the last twenty-five years, in films already being taught rather than merely remembered.
Drama Legend
Awarded
3 catalogue titles in drama, each one a reference point for the films that followed.
Our desk
Best ending, best opening, best twist and the rest — categories we apply to everyone we cover.
Best ending
Rurouni Kenshin: The Final
The last five minutes reorganise everything before them, and hold up when you already know what's coming.
Best opening
Rurouni Kenshin: The Final
A first sequence that states the rules of the film without explaining a single one of them.
Most emotional
Rurouni Kenshin: The Final
The film where the technique steps aside and lets the feeling arrive undefended.
Best twist
My Girlfriend Is a Serial Killer
as Haruko's Older Brother
A reversal earned by information the film gave you and trusted you to misread.
Best visual achievement
Rurouni Kenshin: The Final
Images that would survive with the sound switched off.
Best action sequence
Rurouni Kenshin: The Final
Geography, stakes and consequence held in the same frame — spectacle you can follow.
Best dialogue
Rurouni Kenshin: The Final
Lines written to be spoken, staged so the pauses do half the work.
Most underrated film
I Was a "Secret Bitch"
as Taue Akira
The public vote sits below ours on this one, and the direction is the reason for the gap.
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Have your say
Community
Which Show Kasamatsu performance holds up best?
Our readers argue about this one. Make your case, or read the ranked debate already in progress.
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Reference
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