May 2012, Kay One has been attacked after two performances by masked persons armed with knives, but nobody got hurt. Later he blamed Bushido for sending those people, who denied it. In May 2013, Bushido's former friend Shindy released a diss track against Kay One, titled "Alkoholisierte Pädophile", accusing him of pedophilia and complaining about not being paid for co-writing songs for the album Prince of Belvedair. Kay One banned the track and reacted via Facebook to it, where he stated that he will "uncover the truth" about Bushido and Shindy. In June 2013, Bushido and Shindy were both guests at the German online hip hop portal 16 Bars TV. In the interview with hostess Visa Vie, they talked about their personal issues with Kay One. In late-July, Bushido refers to his beef with Kay One in the song "Stress ohne Grund" with the line: "Kay du Bastard best jetzt vogelfrei" ("Kay you bastard, you are now outlawed"). In August 2013, released Kay One's diss track "Nichts als die Wahrheit", rapping about his past with Bushido and Shindy. In return to the accusation of being a pedophile, he claimed that Bushido had cheated on his wife with a 17-year-old girl. The dispute between both artists reached its high point when Kay One was invited on to the German TV show stern TV, in October 2013, where he talked about the "mafia business" of the Palestinian clan Abou-Chaker and claimed that Bushido served as the "slave of the family". Since then, Kay One receives anonymous death threats and got police protection. Bushido announced his ten-minute-long-running diss track called "Leben und Tod des Kenneth Glöckner" via social media. The track was released on 22 November 2013, via Bushido's YouTube channel and reached 2 million views within 24 hours. The track received positive feedback from the German hip hop community. Hours later, Kay One reacted via Facebook by calling Bushido a "hate preacher" and accused him of lying. He also stated that he will not talk anymore about the feud. In November 2014, Kay One's released a 25-minute response track titled "Tag des Jüngsten Gerichts" on his YouTube channel. The video set a YouTube record in German rap for reaching 3 million views in the first 24 hours. Anne-Marie Ferchichi, Bushido's wife, felt insulted by Kay One's lyrics directed at her and sent him a warning via a lawyer. Kay One originally removed