Asked Gemini what level the current Japan national football team is

The Japan men's national football team participating in the 2026 Aichi-Nagoya Asian Games was essentially composed of a U-21 squad (centered around university students, rotation players, and prospects), which corresponds to a 2.5 to 3rd-tier level.
Key Features and Squad Composition
Dispatched a younger age group (U-21)
Although the age limit for football in the Asian Games is U-23 (under 23), Japan dispatched a U-21 squad, which is two years younger than the tournament regulations, without using wildcards.
No wildcards used
They did not select a single adult wildcard (over 23), even though up to three are allowed.
Squad Members
The roster did not include any elite members from the European-based senior 1st-tier or top-tier J-League squads. Instead, the list was primarily composed of university football players (Tokyo International University, Kyoto Sangyo University, etc.), rotation players/2nd-tier rookies from J-League teams, and prospects from lower-tier overseas leagues.