```js
// How to use:  copy everything > open tampermonkey extension > dashboard > [+] > paste > save
// ==UserScript==
// @name         DVDoom
// @namespace    http://tampermonkey.net/
// @version      2024-04-02
// @description 1 Seia 2 Seias 3 Seias 4...
// @author       (You)
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @namespace    rccom
// @match        *://boards.4chan.org/*
// @match        *://boards.4channel.org/*
// @match        *://desuarchive.org/*
// @match        *://arch.b4k.co/*
// @match        *://archived.moe/*
// @match        *://warosu.org/*
// @match        *://archive.nyafuu.org/*
// @grant        none
// @connect      4chan.org
// @connect      4channel.org
// @require https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js
// ==/UserScript==

(function() {
    const screenHeight = document.body.clientHeight;
    const screenWidth = document.body.clientWidth;

    let ALL_SEIAS = [];

    class DVDOOM {
        constructor(dvdELement) {
            this.dvd = dvdELement;
            this.dvdWidth = dvdELement.clientWidth;
            this.dvdHeight = dvdELement.clientHeight;
            this.x = Math.floor(Math.random() * ((screenWidth * 0.99) - this.dvdWidth));
            this.y = Math.floor(Math.random() * (screenHeight - this.dvdHeight));
            this.dirX = (Math.random()>=0.5)? 1 : -1;
            this.dirY = (Math.random()>=0.5)? 1 : -1;
            this.speed = 2;
        }
    }

    function animateSEIAS() {
        for (let index = 0; index < ALL_SEIAS.length; index++) {
            let currentSeia = ALL_SEIAS[index];
            if (currentSeia.y + currentSeia.dvdHeight >= screenHeight || currentSeia.y < 0) {
                currentSeia.dirY *= -1;
                currentSeia.dvd.style["-webkit-filter"] = 'hue-rotate('+Math.floor(Math.random() * 360)+'deg)';
            }
            if (currentSeia.x + currentSeia.dvdWidth >= (screenWidth * 0.99) || currentSeia.x < 0) {
                currentSeia.dirX *= -1;
                currentSeia.dvd.style["-webkit-filter"] = 'hue-rotate('+Math.floor(Math.random() * 360)+'deg)';
            }
            currentSeia.x += currentSeia.dirX * currentSeia.speed;
            currentSeia.y += currentSeia.dirY * currentSeia.speed;
            currentSeia.dvd.style.left = currentSeia.x + "px";
            currentSeia.dvd.style.top = currentSeia.y + "px";
        }
        window.requestAnimationFrame(animateSEIAS);
    }

    function addNewSeia(seiaCount) {
        document.getElementsByClassName("thread")[0].insertAdjacentHTML("afterBegin", `<div class="doomvdoom" style='position: absolute; left: 0px; top: 0px; height: 75px; width: 75px; -webkit-filter: hue-rotate(90deg); background: url("https://files.catbox.moe/ph1rgd.gif"); pointer-events: none;  background-size: 75px; mask-mode: luminance;' ></div>`.repeat(seiaCount));
        let dvds = document.getElementsByClassName("doomvdoom");
        for (let index = 0; index < dvds.length; index++) {
            let olderSeia = ALL_SEIAS[index];
            if (olderSeia === undefined) {
                ALL_SEIAS.push(new DVDOOM(dvds[index]));
            } else {
                olderSeia.dvd = dvds[index];
            }
        }
    }

    animateSEIAS();

    document.getElementsByClassName("navLinks desktop")[0].innerHTML += ["[<a id=\"addSeia1\" style=\"color:red; font-weight: bold; cursor: pointer;\">+1 Seia</a>]"];
    document.getElementsByClassName("navLinks desktop")[0].innerHTML += ["[<a id=\"addSeia10\" style=\"color:red; font-weight: bold; cursor: pointer;\">+10 Seia</a>]"];
    document.getElementsByClassName("navLinks desktop")[0].innerHTML += ["[<a id=\"addSeia100\" style=\"color:red; font-weight: bold; cursor: pointer;\">+100 Seia</a>]"];

    $(document).on('click', '#addSeia1', () => addNewSeia(1));
    $(document).on('click', '#addSeia10', () => addNewSeia(10));
    $(document).on('click', '#addSeia100', () => addNewSeia(100));
})();
```