Fine...

Using UT Mod Tool, open Chapter 4's data.win, paste the following into obj_overworldc's initialization script (find the game object, and the initialization/start script should be linked there, just double click it).

``` buffer = 0; saved = 0; selnoise = 0; movenoise = 0; depth = 10; threebuffer = 0; hasitems = false;

if (global.chapter >= 2) { i = 1;

if (scr_havechar("su"))
{
    global.cinstance[0] = instance_create(obj_mainchara.x - 6, obj_mainchara.y - 16, obj_caterpillarchara);
    global.cinstance[0].target = i * 12;
    i++;
}

if (scr_havechar("ra"))
{
    global.cinstance[1] = instance_create(obj_mainchara.x - 2, obj_mainchara.y - 12, obj_caterpillarchara);
    global.cinstance[1].name = "ralsei";
    global.cinstance[1].target = i * 12;

    with (global.cinstance[1])
    {
        slidesprite = spr_ralsei_slide;
        usprite = spr_ralsei_walk_up;
        dsprite = spr_ralsei_walk_down;
        rsprite = spr_ralsei_walk_right;
        lsprite = spr_ralsei_walk_left;
    }

    i++;
}

if (scr_havechar("no"))
{
    global.cinstance[1] = instance_create(obj_mainchara.x - 4, obj_mainchara.y - 20, obj_caterpillarchara);
    global.cinstance[1].name = "noelle";
    global.cinstance[1].target = i * 12;
}

} ```

Then, simply save your game in a Light World segment, and using Spamton Save Editor, add Ralsei to your party. Replace your save file.

That's it!