new file mode 100644
--- /dev/null
+++ b/xlovesys.cc
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2004-2006  Kazunori "jagarl" Ueno
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// #define ROOTPATH "/mnt/KEY/CLANNAD"
+// #define ROOTPATH "/home/uenok/pb"
+// #define FONT "msgothic.ttc"
+	/* kochi-mincho-subst.ttf あるいは -*-*-*-r-*--24-*-*-*-*-*-jisx0208.1983-* など */
+	/* TrueType Font は /usr/X11R6/lib/X11/fonts/TrueType/ などに存在する必要がある */
+
+#include<stdio.h>
+#include<stdlib.h>
+#include<unistd.h>
+#include<locale.h>
+
+#include<SDL.h>
+#include<vector>
+#include<getopt.h>
+
+#include"system/file.h"
+#include"system/system_config.h"
+#include"window/widget.h"
+#include"window/system.h"
+
+#include"music2/music.h"
+
+#include"scn2k/scn2k.h"
+#include"scn2k/scn2k_impl.h"
+
+const char key_lb_orig[] = {0x4b, 0x45, 0x59, 0x5c, 0x83, 0x8a, 0x83, 0x67, 0x83, 0x8b, 0x83, 0x6f, 0x83, 0x58, 0x83, 0x5e, 0x81, 0x5b, 0x83, 0x59, 0x81, 0x49, 0};
+
+const char key_lb_new[] = "KEY\\LittleBusters";
+
+
+extern "C" int main(int argc, char* argv[]); /* SDL.h で定義されるので必要ないはずなんだけど…… */
+
+int main(int argc, char *argv[]) {
+	AyuSysConfig config;
+	int opt = 0, end = 0, screenmode = 0;
+	char rootPath[1024]  = "/mnt/KEY/CLANNAD";
+	char font[1024]      = "msgothic.ttc";
+	Uint32 videoOptions  = SDL_HWSURFACE;
+
+	while(1) {
+		opt = getopt(argc, argv, "fdt:c:r:vh?");
+		if(opt == -1) {break;}
+
+		switch(opt) {
+			case 'f':
+				videoOptions |= SDL_FULLSCREEN;
+				break;
+			case 'd':
+				videoOptions |= SDL_DOUBLEBUF;
+				break;
+			case 't':
+				strncpy(font, optarg, 1023);
+				break;
+			case 'r':
+				strncpy(rootPath, optarg, 1023);
+				break;
+			case 'v':
+				// FIXME: "VERSION" undeclared?
+				// printf("xclannad %s\n", VERSION);
+				printf("xclannad 0.05e\n");
+				end = 1;
+				break;
+			case 'h':
+			case '?':
+				printf("\nUsage: %s [OPTIONS]\n\n", argv[0]);
+				printf("  -f    : full screen mode\n");
+				printf("  -d    : double buffer mode\n");
+				printf("  -t    : set font (typeface)\n");
+				printf("  -r    : set root path (default /mnt/KEY/CLANNAD)\n");
+				printf("  -v    : show version and exit\n");
+				printf("  -h -? : show help and exit\n\n");
+				end = 1;
+				break;
+		}
+	}
+	if(end == 1) return 0;
+
+	printf("Settings:\n");
+	printf("  Locale    : %s\n", setlocale(LC_ALL, ""));
+	printf("  Root Path : %s\n", rootPath);
+	printf("  Font      : %s\n", font);
+	printf("\n");
+	
+	file_searcher.InitRoot(rootPath);
+	config.LoadInitFile();
+	const char* regname = config.GetParaStr("#REGNAME");
+	if (strcmp(regname, key_lb_orig) == 0) { // "リトルバスターズ！ -> LittleBustersに#REGNAMEを変更
+		config.SetParaStr("#REGNAME", key_lb_new);
+	}
+	SetFont(font);
+
+	MuSys mu(config);
+	mu.InitMusic();
+
+	if(SDL_Init(SDL_INIT_VIDEO)) {
+		printf("Unable to init SDL: %s\n", SDL_GetError());
+	        return 1;
+	}
+	atexit(SDL_Quit);
+
+	config.GetParam("#SCREENSIZE_MOD", 1, &screenmode);
+	if (screenmode == 1) {
+		SDL_SetVideoMode(800, 600, 0, videoOptions);
+	} else {
+		SDL_SetVideoMode(640, 480, 0, videoOptions);
+	}
+	// SDL_SetVideoMode(640, 480, 0, videoOptions);
+	// SDL_SetVideoMode(800, 600, 0, SDL_HWSURFACE /*| SDL_FULLSCREEN */);
+	{
+		System::Main main_sys;
+		PicContainer* main_panel = main_sys.root.create_node(Rect(0, 0, main_sys.root.width, main_sys.root.height), 0);
+		main_panel->show();
+		try {
+			Scn2k scn(main_sys.event, *main_panel, mu, config);
+			main_sys.Mainloop();
+		} catch(...) {
+			fprintf(stderr,"System faulted; exit now.\n");
+		}
+		delete main_panel;
+	}
+
+	mu.FinalizeMusic();
+
+	SDL_Quit();
+}
+