"上門 知樹選手 完全移籍加入のお知らせ" [Announcement of permanent transfer of Tomoki Kamimon]. www.cerezo.jp (in Japanese).
"複数年契約更新選手について" [Regarding players who have renewed their multi-year contracts]. www.cerezo.jp (in Japanese).
fagiano-okayama.com
"上門知樹選手 完全移籍加入のお知らせ" [Announcement of permanent transfer of Tomoki Kamimon]. www.fagiano-okayama.com (in Japanese).
"上門知樹選手 10月「2021明治安田生命J2リーグKONAMI月間MVP」 受賞のお知らせ" [Announcement: Tomoki Kamimon receives the October "2021 Meiji Yasuda Life J2 League KONAMI Monthly MVP" award]. www.fagiano-okayama.com (in Japanese).
football-zone.net
"J2屈指の"ゴラッソメーカー" 攻守にハイクオリティーな五輪世代MF【J2からの推薦状】" [One of the best "golasso makers" in J2, a high-quality offensive and defensive midfielder of the Olympic generation [Letter of recommendation from J2]]. www.football-zone.net (in Japanese).
"【C大阪】MF上門知樹が7日鹿島戦の人生初の一発退場を反省「相手とチームに申し訳ない」" [[C Osaka] Midfielder Tomoki Kamimon reflects on his first ever red card in the match against Kashima on the 7th, saying, "I'm sorry to the other team and the other players."]. www.nikkansports.com (in Japanese).
okinawatimes.co.jp
"C大阪の上門、J1デビュー戦ゴール ルヴァン杯1次リーグ 沖縄・与勝高出身" [Cerezo Osaka's Kamimon scores in his J1 debut match in the Levain Cup first round. Born in Okinawa's Yosho High School.]. www.okinawatimes.co.jp (in Japanese).
ryukyushimpo.jp
"J2元年開幕3連勝のFC琉球 チーム躍進の鍵は「純県産」ストライカー・上門知樹 「男手一つで育ててくれた父、地元沖縄のために」" [FC Ryukyu wins three straight games since the start of the J2 season. The key to the team's success is "pure Okinawan" striker Tomoki Kamimon. "For my father who raised me as a single father, and for my hometown, Okinawa."]. ryukyushimpo.jp (in Japanese).
"FC琉球、大阪産業大MF宮城晃太ら5選手の加入内定を発表" [FC Ryukyu announces the signing of five players, including Osaka Sangyo University midfielder Miyagi Kota]. www.soccer-king.jp (in Japanese).