School Days Wiki
Rideru Takatsukasa
Gender Female
Hair Brown
Eyes Brown
Affiliation Summer Radish
Family and Relatives Tomaru Sawagoe (father/father of child)

Arisu Takatsukasa (mother)
Jou Inou (paternal grandfather)
Ms. Sawagoe (paternal grandmother)
unnamed maternal half-sibling via Ayumu
Kagura Inou (paternal half-sister)
Ayumu Inou (paternal half-brother)
Youko Saionji (paternal half-sister)
Moeka Sekihata (paternal half-sister)
Hajime Inou (paternal half-sister/half-niece via Kagura)
Mai Kiyoura (paternal half-sister/half-niece via Kagura)
Rin Inou (paternal half-sister/half-niece via Kagura)
Rina Inou (paternal half-sister/half-niece via Kagura)
Rio Inou (paternal half-sister/half-grandniece via Hajime)
Risa Inou (paternal half-sister/half-great-grandniece via Rio)
Rika Inou (paternal half-sister/half-great^2-grandniece via Risa)
Yukari Nagawa (paternal half-sister)
Midori Nagawa (half-niece via Ayumu)
Sakura Nagawa (half-niece via Ayumu)
Shun Hazama (paternal half-bother)
Toki Hazama (paternal half-sister)
Kuu Hazama (paternal half-brother/lover)
Wakaba Nijou (paternal half-sister)
Touri Sawagoe (paternal half-sister)
Tomomasa Sawagoe (paternal half-brother)
Kei Ogata (paternal half-brother)
Miki Sawanaga (half-niece via Ayumu)
Taisuke Sawanaga (half-nephew via Ayumu)
Shinichi Shiba (paternal half-brother)
Youji Shiba (paternal half-brother)
Makoto Itou (paternal half-brother)
Itaru Itou (paternal half-sister)
Sekai Saionji (paternal double half-niece via Shun and Youko)
Setsuna Kiyoura (paternal half-niece via Shun and Mai/half-grandniece via Mai)
Hanon Nijou (paternal double half-niece via Shun and Wakaba)
Kazuha Nijou (paternal double half-niece via Shun and Wakaba)
Futaba Nijou (paternal double half-niece via Shun and Wakaba)
Inori Ashikaga (paternal half-niece via Shun)
Roka Kitsuregawa (paternal half-niece via Shun)

Seiyuu Marina Ōno

Rideru Takatsukasa (鷹司 りでる Takatsukasa Rideru) is the protagonist of Summer Radish Vacation 2.


Rideru was one of three daughters born between Arisu Takatsukasa and Tomaru Sawagoe. It is unknown if she is aware that Tomaru is her father.


Rideru is described as immature and naive.

Summer Radish Vacation 2

Depending on the route, she may end up becoming a daughter-wife having children with Tomaru and forced into prostitution, or succeed in her love life with her childhood friend, Kuu Hazama.

In one route, she ends up castrating Tomaru.[1]


  • Her given name Rideru (りでる) appears to be of Western origin with the name being hiragana of "Riddle" or "Liddell". With her mother's name (a pronunciation of "Alice"), the latter meaning could be a reference to Alice Liddell, the basis of Alice from Lewis Carroll's Alice's Adventures in Wonderland.
  • Her surname may originate from the Takatsukasa family, an aristocratic kin group branching from the Fujiwara clan.