Magia Record 6th Anniversary ARG

On August 18th, 2023, the Magia Record X (Twitter) account posted a link to a webpage on their site: https://6th.anniv.magireco.com/ . Its primary features were a countdown for the game's anniversary, an announcement of an Amazon giftcard campaign and a button to share the campaign on X.

However, the page also contained three clues:

• A code on top of the page, that reads eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9
  • After base64 decoding, it reads {"alg":"HS256","typ":"JWT"}
• A code in the middle of the page, that reads eyJ1cmwiOiJodHRwczovLzZ0aC5hbm5pdi5tYWdpcmVjby5jb20vc2VjcmV0LyJ9.
  • After base64 decoding, it reads {"url":"https://6th.anniv.magireco.com/secret/"}
• A code at the end of the page, that reads [1:][2:][3:][4:][5:][6:][7:][8:][9:][10:][11:][12:][13:][14:][15:][16:][17:][18:][19:][20:][21:][22:][23:][24:][25:][26:][27:][28:][29:][30:][31:][32:][33:][34:][35:][36:][37:][38:][39:][40:]

The X share campaign button randomly picked one of 90 pre-fabricated tweet formulas, which only differed by the featured link. The link contained a simple image featuring one of Magia Record characters, the game's logo, the name of campaign, and a code. The codes duplicated between some characters. The codes read:

1: O 2: 4 3: W 4: 7 5: T 6: w 7: h 8: x 9: Y 10: i 11: e 12: U 13: U 14: 8 15: F 16: F 17: D 18: P 19: W 20: v 21: 4 22: F 23: p 24: k 25: K 26: n 27: q 28: m 29: z 30: R 31: t 32: l 33: 6 34: T 35: E 36: p 37: p 38: s4 39: dG 40: WA

Combining to O4W7TwhxYieUU8FFDPWv4FpkKnqmzRtl6TE9ps4dGWA .

The hamburger menu on the main page additionally had a link to the setToken page: https://6th.anniv.magireco.com/settoken/ . After entering the three codes combined (eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1cmwiOiJodHRwczovLzZ0aC5hbm5pdi5tYWdpcmVjby5jb20vc2VjcmV0LyJ9.O4W7TwhxYieUU8FFDPWv4FpkKnqmzRtl6TE9ps4dGWA), and entering the /secret/ page discovered from the second code, an ASCII artwork of Homura's shield with the number 6 appears: iVBORw0KGgoAAAANSUhEUgAAAB 0AAAAdCAY AAABWk2cPAAAACXBIWXMAAAsTAAALE wEAmpw YAAAAA XNSR0IArs4c6QAAAARn QU1BA ACxjw v8YQU AAAgqSURBVHgBjVZ7UFTnF f/de/ fJvlh 3gQVB VlBZJSiiiWA1XUUk1DbG1BiTT H10J nWmTa fSpBrTV mT6sDNOB6fTTjqdOoltqm0mxvQVjZF nUQl FJBgE5 L EbZHm6LMI+2cfNuXfB8FLz7f5x97vfnt85 v3P O7zsM vsIq K3krNqxU7Y1EIlaGQTZtme+/5NHEA3YWzAc cE6 kuPvK C/VH2m Ie9PHH8rJ WOlNAjgTEYHRvG7a4mDN0dgEGf gEz LGmhUB hF5msG 3OfClDwN nHhiZQnmMTP1IPESA9Y2XUFXzL7 jd4 wDH gWVZxC 4w4MUd P0ScIXk G8OQ6KfH7SotL948+ErTs+FlzCE wlp lF 4vbkG Fy6+g2 CQ3tA/e JaBXCoXYcyLl+KlZ4vxgGWXgN8 0O 2r2 UYARP oT/X7+ MYDgMmU IO RiKBVCLFge/+HCssOejts8PrG 8Pc WM TIRXu C3XlBBUpn Awp/ 9PrcGBm5K0a4fMVyGA1GLEn Lo pw mgaXNYC CAjq7mKRBiw4/BY ft0sq PAZH8OqJDDmYBRj5UKNRISk sB Jp Whta6NcSvFU/k7wfBhd9jZQRc MxYLufq Kor5/Hu+2+isvbcdEPmkEJ ZM v WDm6I1AuYs5lkswy F9sQXGBf FYnbUBBdadiFFq0WW7ica mG k RCYQQCPjy +Jl9kIzkpnZx MQXt7I/wBD +QyBWJiNIKp3M1bvl1dX n6 O8 ixEG W2L GcvtceHy /85hbHwUOQ SWs8oqUsgQOYPDd/Dfi3 9B aC Iok uVy jaDX0Qm P5x5C4QD6Bnq JfhNs9nb4CPjJvO2iTU kU p 4q ZLB 7bbNC Pqs/g00+vgg/ z5HEAaeYMijiLCqcTra 0N C BOt oC9L 7QNiY9XKdUT7bqK8 BT09HRh29tH5TO Rk W4 k Z9 X271 EZ6lny1zk srJ8WT67+Fgz/4L SxLV6GzqwUfff x3 tL Q0 4PChw /jr6b9BKqOG4CPgI 2HcvFkP1+gQHlue i8Itz8PrdWN9 bt EM QG EFlcq9 XGH+rhLiz DIbNDE+ hQShAlpNLNavK0 KsLhbqGBX2 7H kR ub l5cDqdK CzcivLyC gSJZj7Co 7X9BtLTM6HTLkB t3QWqg0QYF iT MN Ez EcQVbnnu dHk2zQaU SOSxLcnC x4h0sTVsJFXm8+4 WnodWp0N zc jB HX XUwEguTEX nx86RJCoR C1SxDXG 2vgujcMh8MGlUqD 9LTHZh pm oG CJ nuy55PL0ie Bmay3c3n vUh01ITGVxpa4C/ QN9MB qN JI d e9A/2Y3BoAE ePHYOO9g6 8/FNYlq/CZ7f qEQwF4fW7Z1rlhU KEmf nV L/ /I KxUa+HxByOUy RKhwQqEI2mx1sNtvUTQh7Nhe RDQZ0dXdiWt116C NjU U8 icTg 4CC0Wh2KniqiG pDAYY8IpYIx 9wi8HjfU Gq3Y52FSNQlLei0 N Ay EF 2EhIihXZJmiMEe RutSDEObHj +TzoNHpqA Q+e2/k0VmfnkAiE ER cX h/zN+ci3WunZiG3 f3Ib4+DhR IASxyMpOo Jbxk4AwMGfGw7BQ irVf T4 UujsHjG1LAMdIow yd+c9bmGn WYt32nADK 5nDhgkBIfjwDRd /W TK 0g 0x uFKbQ005HWvow8Kh QKmhDii14 2xMTeGXS6 kLUqhQgISTCa4 vF 7I VV okp 5shpeg1ajXkHIuKf 18FF9EK8 tjEFW7eZV UqdJb2jmakZ iw hM XB DIVdC opTDkJSIcf8EkuN NRNc4VW kAH174kE CT0HOnB729d +A ZH xO rWRCJ cTaCVMsK6Cm/SnJu dNwDpVI Be0s3PC7 JVLnUSUjn qq iY nv G7WHR3d UCrN2Dongu2hlac f+8cbN026MnbX/zsKK43 3MDGDRvJ2 B hU MW qxTWQyqgO K8p8X/gMnKZM21g BrYRHW5eVRlCoo SbN7u5zg 2G i/ ChM GU1Z2Pjbk D7iEDb/cicwnMi GjEjv6 +iH YO jo x4fOLVWdel IqTZSfR8/nn4CQc Ve0Q9 aEBy5 Zl4 GB xMW61t4Khi12 48DV6Pb5f/Bo2bSn A2MA IW us d9 ys 4BH4xW1y8Y5Qwq sQE++Tw+wIov3wZ/X2 9CH h8N CR w2 Pe 9l7Fr/z5ca7qBZR YL+hwOeCinWp0Whw4fQl vrL SEC 8 SN 8x0ecOHPqz9DIFbjd3D OtEfH2EbrQJZNdWUqnrXK iYKh jCH6 qW ql UkDjAkpGBAz9+lVxkqE f78Yff/w6vvvIKNb4ae/ftodu kjSJkiGKeMsW LBApFNdTf h 1Nv voVUYxam7tqwiDNtXDlx /B9l9PKgcKC tqxHVn7yP3m6H0NEoKMhH jEaN2p oa jJD 8LU5bjKQEMxJNy5BuzhJNn jr9a1KpI WoXMh6OQKZUYv 9Lr2Gh ac lU mCd/8sZuca6RTIFKFLLSoD /wDFFkt qSvEb2tDH 6Awb 4+VJRX Rs 9Q9 JaMNdi4/htYlLxMjE7IoWAx0 ZQC58 gg7TFi btUaD RWSfopW uy fgK /1SCaet43TNcTRaMJMTxLjXhc 7uZ vj9Hm qjGCQvXEIXspY0NgC9N j4q lhF hgmjCu+/9CRMTE6ITnEyKoq3PYu3 KQhGQa N10ZNpwNmcan A0c zUe 0QNpvN+BC1Rlywg81TQ86rZ7k043+focon wKgjI onZ3UeNm/c RXUh nwM4L6iwom00URLN8Zcn6xouQq3SifTV N1TSbN Q9CcZSH3 Iwx iXga09sRUb6Wkgk0pNumntLv8rcO0/ UJXRon /A7HA7St UX9a UgS22PI2Y+7LgdCRLdOswBJpjRIO DmJDXv s0Bu7qh 9k96 GgM8GFCYPdHqWdn34d2inWJhp Hq8Z9n tPzRTZ 7fQH l4XY3Q77PegAAAABJRU5Erk Jggg== ###### ##### ##################### ####### ####### ########################################## #############################

The ASCII artwork can then be further base64 decoded into a small image of Homulilly's symbol after removing the spaces and linebreaks.