Example.cs

using TMPro;
using UnityEngine;

public class Example : MonoBehaviour
{
    [SerializeField] private TMP_FontAsset m_tmpFontAsset;

    private void Awake()
    {
        TMP_Text.OnFontAssetRequest += OnFontAssetRequest;

        TMP_FontAsset OnFontAssetRequest( int index, string name )
        {
            Debug.Log( $"index: {index}" );
            Debug.Log( $"name: {name}" );

            return name == "azuki SDF"
                    ? m_tmpFontAsset
                    : Resources.Load<TMP_FontAsset>( $"{TMP_Settings.defaultFontAssetPath}/{name}" )
                ;
        }
    }
}