The Pulse of K-Entertainment

Sadaharu
ArtistSM Entertainment

Sadaharu

Sadaharu is one of the Japanese trainees helping SM Entertainment turn SMTR25 into a public pre-debut property instead of a closed trainee rumor cycle. His visibility comes through the same official pipeline that powers Reply High School, the Mnet-facing variety rollout designed to show personality, performance growth, and team chemistry before the final lineup hardens.

That matters because SMTR25 is being positioned as more than a teaser brand. Sadaharu is already tied to the 2026 single We Go Up and the project's first meet-and-greet circuit, which means his page needs to reflect a trainee operating in public view, not someone waiting for a debut notice to become legible. The combination of show exposure, music-release proof, and live-fan event positioning gives him a clearer runway than most pre-debut profiles ever get.

SMTR25
Member of SMTR25
0 articles3 creditsJapanese

Gallery

Discography

2026
We Go UpSingle
SMTR25 MemberSMTR25SM Entertainment

Filmography

2026
Reply High SchoolVariety Show
Cast MemberMnet

Other Credits

2026
SMTR25 First Meet and GreetAPPEARANCE
PerformerSMTR25SM Entertainment

Fans Also Ask

Who is Sadaharu in SMTR25?
Sadaharu is a Japanese trainee in SM Entertainment's SMTR25 project, the public pre-debut team introduced through SMTOWN stages and Mnet's Reply High School. He is one of the trainees getting early audience exposure before SM confirms how its next boy-group lineup will be finalized.
How old is Sadaharu from SMTR25?
Soompi's Reply High School profile update listed Sadaharu as born on September 14, 2007. That makes him part of the younger end of the SMTR25 class, but still old enough to sit in a competitive public trainee cycle where fan response and visibility can meaningfully shape future positioning.
What show is Sadaharu appearing in?
Sadaharu appears in Mnet's Reply High School, the reality program built around the SMTR25 trainees. The show places 15 participants into era-themed school settings and uses performances, lessons, and team dynamics to turn SM's trainee process into an audience-facing story before debut.
Has Sadaharu debuted yet?
No. Sadaharu is still in SM Entertainment's public trainee phase, which means he has visibility through stages, variety content, and music releases without being locked into a fully debuted idol-group identity yet. Reply High School and We Go Up are part of that pre-debut runway.
What is Sadaharu known for right now?
Right now, Sadaharu is known for being part of SMTR25's public rollout through Reply High School and the 2026 single We Go Up. Those projects matter because they give him real audience exposure inside one of the most watched trainee pipelines in the Korean music business.

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