Following his move to Kortrijk, Masui's current-season form is up 71% on last season (Season 7→12), while his Rating climbed 37→40. That makes this his strongest season for form to date.

Domestic career

Season	Club	Apps	G	Match	RTG	Season
2026/27	KortrijkLoan · 17th	2	0	7	40	12
2025/26	Beerschot VALoan · 3rd	9	2	7.11	40	12
2025/26	Jubilo Iwata · 5th	13	2	—	37	7
2024/25	Nagoya Grampus · 11th	25	2	6.75	47	11
2023/24	Nagoya Grampus · 6th	1	0	6.7	43	0
2021/22	Kwansei Gakuin	1	0	—	—	—

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.

Scout report

Squad depthCentral midfielder

K. Masui is a 25-year-old central midfielder at Jubilo Iwata, rated 37.3 overall by Field Insider's model. In his prime years, he has been a fringe squad member this season (25.9% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Masui.

On the season, Masui graded 7 for current form (age-blind), on 2 goals, 0 assists and 0 defensive actions per 90.

Year-on-year, that's a clear step up on last season (Season 7 → 12). Across the 4 seasons we hold, it's his best return yet.

On long-term talent our Rating reads 37. At 25 Masui is in his prime years, and a market index of 6.7 reflects that trajectory.

From the career report

Read the full career report →

Below his 2024/25 peak but holding a solid level — the platform for a return is there.

Peak: 2024/25Holding level

37.3

Ratingi

developing / rotation level

6.8

Seasoni

below regular-starter level

25.9%

Minutes

limited game time

Def. actions / 90

light defensive volume

Output in context · Jubilo Iwata finished 5th of 20 · an upper-table side

Apps

Def. / 90

—

Tackles

—

Interceptions

Clean sheets

0 tackles, blocks & interceptions per 90 — light defensive volume, with 3 clean sheets across 13 appearances. Behind an upper-table side (5th of 20) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume. Going forward he chipped in 2 goals and 0 assists — a useful bonus from the back.

Strengths

Attacking threat. Chips in from deep: 0.2 goal involvements per 90, useful for a central midfielder.

Watch points

Game time. Only 25.9% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 37.3 overall — developing / rotation level. Defensively he reads as light defensive volume (0 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead.

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %25.9%

Available fixtures39 of 39

Goals / 900.198

Assists / 900

Goal contribution / 900.198

Defensive actions / 900

Player flow

Goal involvements2

Cards / 900

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~12), then tapers with age. At 25, Masui sits on 6.7, at or near its peak. The blue line is Masui's projected Rating — 37.3 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.

Season statistics

Bars = where he ranks among central midfielders in the Jupiler Pro League with 600+ minutes this season.

Shooting

Goals2

Passing

Assists0

Yellow/red cards

Yellow cards0

Red cards0

Transfer history

Kortrijk(on loan)Jun 2026 – now

Nagoya Grampus(back from loan)Jun 2026 – Jun 2026

Beerschot VA(on loan)Jan 2026 – Jun 2026

Nagoya Grampus(back from loan)Jan 2026 – Jan 2026

Jubilo Iwata(on loan)Feb 2025 – Jan 2026

Nagoya Grampusuntil Feb 2025

KKwansei Gakuin(back from loan)Feb 2024 – Feb 2025

Nagoya GrampusFeb 2024 – Feb 2024Free

Nagoya Grampus(on loan)Nov 2022 – Feb 2024

KKwansei Gakuinuntil Nov 2022

About K. Masui

Ken Masui is a 25-year-old central midfielder who plays for Kortrijk, born on April 4, 2001, standing 171 cm tall. He is from Japan. Kortrijk currently sit 17th of 18 in the Jupiler Pro League.

This season

In the current season, K. Masui has made 2 appearances with 0 goals and 0 assists across 151 minutes, averaging a 7 match rating over his last 2 rated games. Though primarily a central midfielder, he has also lined up in attack this season.

Recent matches

August 15, 2026: 0-3 loss at home vs Antwerp (78 minutes, 7.3 rating)
August 7, 2026: 0-3 loss away at Club Brugge KV (73 minutes, 6.7 rating)

K. Masui's next match is on August 29, 2026, when Kortrijk face Charleroi at home in the Jupiler Pro League.

Field Insider's view

Field Insider currently rates K. Masui at 37.3 with a Season form score of 6.8. See the full scout report for strengths, watch-points and the market-value outlook.

His honours include 1 career title — among them the J-League Cup. Full list in the career record.

Career

Across 5 recorded seasons, K. Masui has totalled 51 club appearances with 6 goals and 0 assists for 5 different clubs. His busiest campaign came in 2024/25, with 25 appearances for Nagoya Grampus.

K. Masui's career has also included time at Nagoya Grampus, Beerschot VA, Jubilo Iwata and KKwansei Gakuin.

Transfer news

No transfer news found for this player.