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Translation

• Context: Shinomiya Kaguya 四宮かぐや did a favor for her kouhai, Ishigami Yuu 石上優, who tells her:
• Shinomiya-senpai......
  四宮先輩･･････
  (character name.)
• maji-manji ssu......
  まじ卍っす･･････
  [You] are maji-manji......
  [You] are [seriously awesome]......
  
  • ssu
    っす
    (contraction of desu です.)
• sore, douiu imi desu ka?
  それ　どういう意味ですか？
  That, [what] does [it] mean?
• boku mo wakarimasen......
  僕もわかりません･･････
  [I] don't know either......
  • Ishigami isn't a riajuu リア充.