Things to write List
Fanfics/Pairings to probably write
Prince of Tennis
Pairings for Blessings Series (way too many @.@)
Akustu Jin / Akutagawa Jirou (Already wrote... but more of them is always fun)
Hiyoshi Wakashi / Kaidoh Kaoru (in progress)
Inui Sadaharu / Oshitari Yuushi (rewriting/in progress)
Sengoku Kiyosumi /Atobe Keigo
Akutsu Jin / Sengoku Kiyosumi / Atobe Keigo / Akutagawa Jirou (>.> yeah... )
Tezuka Kuimitsu / Itsuki Marehiko
Chinen Hiroshi / Mukahi Gakuto
Amane Hikaru / Momoshiro Takeshi
Yukimura Seiichi / Dan Taichi
Sanada Genichirou / Oshitari Kenya
Ohtori Choutarou / Niou Masaharu [already written but there's another fic to come for them]
Marui Bunta / Oishi Shuuichirou
Arai Masashi / Saeki Koujirou
Fuji Yuuta / Kai Yuujirou
Wakato Hiroshi / Zaizen Hikaru
Kurobane Harukaze / Ibu Shinji
Muromachi Touji / Yagyuu Hiroshi
Kuwahara Jackal / Kamio Akira
Mizuki Hajime / Hitouji Yuuji
Minami Kentarou / Tanaka Youhei / Tanaka Kouhei
Shinjyou Reiji / Akazawa Yoshirou
Yanagi Renji / Kisarazu Atsushi
Kite Eishirou / Fuji Syuusuke
Kawamura Takashi / Tachibana An
Echizen Ryoma / Yanagisawa Shinya
Higashikata Masami / Kajimoto Takahisa
Kikumaru Eiji / Tooyama Kintarou
Kisarazu Ryou / Hirakoba Rin
Tachibana Kippei / Shiraishi Kuranosuke
Chitose Senri / Kirihara Akaya
Shishido Ryou / Taki Haginosuke (in progress)
Minor Pairings
Yagyuu Hiroshi / Shishido Ryou
Shishido Ryou / Fuji Syuusuke
Sanada Genichirou / Yukimura Seiichi
(Possibly more pairings)
Other Pairings I wanna write
Niou/Shiraishi
Wakato/Shishido [that christmas meme fic was fun to write]
Yuushi/Hiyoshi
Hiyoshi/Kenya
Yanagi/Miyuki
Momo/Hiyoshi
Bane/Marui
Bane/Niou
Bane/Momo
Bane/Eiji
Bane/Shiraishi
Yuushi/Davide
Yagyuu/Davide
Kabaji/Jirou
Inui/Ohtori
The Dating Game Pairings
Kuwahara Jackal/Chitose Miyuki
Inui Sadaharu/Niou Masaharu
Tachibana An/Kisarazu Atsushi
Saeki Koujirou/Ryuzaki Sakuno
Akutsu Jin/Shishido Ryou
Kawamura Takashi/Yagyuu Hiroshi
Sanada Genichirou/Dan Taichi
Momoshirou Takeshi/Mizuki Hajime
Oshitari Yuushi/Yanagisawa Shinya
Chinen Hiroshi/Taki Haginosuke
Tezuka Kunimitsu/Kisarazu Ryou
Ibu Shinji/Fuji Syuusuke
Oshitari Kenya/Hirakoba Rin
Kamio Akira/Yanagi Renji
Ohtori Choutarou/Kirihara Akaya
Marui Bunta/Amane Hikaru
Atobe Keigo/Kaidoh Kaoru
Hiyoshi Wakashi/Kikumaru eiji
Akazawa Yoshirou/Oishi shuichirou
Shiraishi Kuranosuke/Akutagawa Jirou
Kurobane Harukaze/Hitouji Yuuji
Kite Eishirou/Kajimoto Takahisa
Wakato Hiroshi/Tooyama Kintarou
Arai Masashi/Tanaka Youhei/Tanaka Kouhei
Zaize Hikar/Echizen Ryoma
Tachibana Kippei/Mukahi Gakuto
Chitose Senri/Fuji Yuuta
Sengoku Kiyosumi/Itsuki Marehiko
Kai Yuujirou/Osakada Tomoka
All those prompt tables
here
Prince of Tennis
Pairings for Blessings Series (way too many @.@)
Akustu Jin / Akutagawa Jirou (Already wrote... but more of them is always fun)
Hiyoshi Wakashi / Kaidoh Kaoru (in progress)
Inui Sadaharu / Oshitari Yuushi (rewriting/in progress)
Sengoku Kiyosumi /Atobe Keigo
Akutsu Jin / Sengoku Kiyosumi / Atobe Keigo / Akutagawa Jirou (>.> yeah... )
Tezuka Kuimitsu / Itsuki Marehiko
Chinen Hiroshi / Mukahi Gakuto
Amane Hikaru / Momoshiro Takeshi
Yukimura Seiichi / Dan Taichi
Sanada Genichirou / Oshitari Kenya
Ohtori Choutarou / Niou Masaharu [already written but there's another fic to come for them]
Marui Bunta / Oishi Shuuichirou
Arai Masashi / Saeki Koujirou
Fuji Yuuta / Kai Yuujirou
Wakato Hiroshi / Zaizen Hikaru
Kurobane Harukaze / Ibu Shinji
Muromachi Touji / Yagyuu Hiroshi
Kuwahara Jackal / Kamio Akira
Mizuki Hajime / Hitouji Yuuji
Minami Kentarou / Tanaka Youhei / Tanaka Kouhei
Shinjyou Reiji / Akazawa Yoshirou
Yanagi Renji / Kisarazu Atsushi
Kite Eishirou / Fuji Syuusuke
Kawamura Takashi / Tachibana An
Echizen Ryoma / Yanagisawa Shinya
Higashikata Masami / Kajimoto Takahisa
Kikumaru Eiji / Tooyama Kintarou
Kisarazu Ryou / Hirakoba Rin
Tachibana Kippei / Shiraishi Kuranosuke
Chitose Senri / Kirihara Akaya
Shishido Ryou / Taki Haginosuke (in progress)
Minor Pairings
Yagyuu Hiroshi / Shishido Ryou
Shishido Ryou / Fuji Syuusuke
Sanada Genichirou / Yukimura Seiichi
(Possibly more pairings)
Other Pairings I wanna write
Niou/Shiraishi
Wakato/Shishido [that christmas meme fic was fun to write]
Yuushi/Hiyoshi
Hiyoshi/Kenya
Yanagi/Miyuki
Momo/Hiyoshi
Bane/Marui
Bane/Niou
Bane/Momo
Bane/Eiji
Bane/Shiraishi
Yuushi/Davide
Yagyuu/Davide
Kabaji/Jirou
Inui/Ohtori
The Dating Game Pairings
Kuwahara Jackal/Chitose Miyuki
Inui Sadaharu/Niou Masaharu
Tachibana An/Kisarazu Atsushi
Saeki Koujirou/Ryuzaki Sakuno
Akutsu Jin/Shishido Ryou
Kawamura Takashi/Yagyuu Hiroshi
Sanada Genichirou/Dan Taichi
Momoshirou Takeshi/Mizuki Hajime
Oshitari Yuushi/Yanagisawa Shinya
Chinen Hiroshi/Taki Haginosuke
Tezuka Kunimitsu/Kisarazu Ryou
Ibu Shinji/Fuji Syuusuke
Oshitari Kenya/Hirakoba Rin
Kamio Akira/Yanagi Renji
Ohtori Choutarou/Kirihara Akaya
Marui Bunta/Amane Hikaru
Atobe Keigo/Kaidoh Kaoru
Hiyoshi Wakashi/Kikumaru eiji
Akazawa Yoshirou/Oishi shuichirou
Shiraishi Kuranosuke/Akutagawa Jirou
Kurobane Harukaze/Hitouji Yuuji
Kite Eishirou/Kajimoto Takahisa
Wakato Hiroshi/Tooyama Kintarou
Arai Masashi/Tanaka Youhei/Tanaka Kouhei
Zaize Hikar/Echizen Ryoma
Tachibana Kippei/Mukahi Gakuto
Chitose Senri/Fuji Yuuta
Sengoku Kiyosumi/Itsuki Marehiko
Kai Yuujirou/Osakada Tomoka
All those prompt tables
here