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Sanae Dekomori
Name in Japanese 凸守 早苗
Romaji Translation Dekomori Sanae
Debut (Anime) Chuunibyou Demo Koi ga Shitai! Episode 03: The Heretic...Twintail
Appears in Anime, Light novel
Voice Actor (Japanese) Sumire Uesaka
Voice Actor (English) Brittney Karbowski
Personal Info
Gender Female
Birthday August 9th
Age 15 (S1) 16 (S2) 17 (Movie)
Blood Type O
Height 143 cm (4'8")
Weight 45 kg (99 lbs)
Title Third Year Junior High Schooler (Anime only), Mjolnir Hammer
Status Alive

Sanae Dekomori (凸守(でこもり) 早苗(さなえ) Dekomori Sanae?) is a side character from the Japanese anime, Chūnibyō Demo Koi ga Shitai!.

She is voiced by Sumire Uesaka in the anime. In the English dub, she is voiced by Brittney Karbowski.

Character Outline

Sanae Dekomori has been Rikka Takanashi's friend since they met each other two years ago via internet. Similarly to Rikka, she is also suffering from eighth grader syndrome. She has long twin-tails tied with small weighted bags that she calls "Mighty Mjolnir Maul" that "makes men meet their mortality". She hates milk very much but still forces herself to drink it everyday, hoping to grow taller. She is very prone to motion sickness.


A year ago, Sanae posted queries about parallel worlds on the internet. She received replies from the “Tyrant’s Eye” and “Mori Summer”, which delighted her. She later found out that the “Tyrant’s Eye” was her "master" in a "previous life" and decides to become her "servant" once again. She is trying to seek out “Mori Summer” which Shinka Nibutani later revealed to be herself; however, Shinka does not act like "Mori Summer" therefore, Sanae does not believe Shinka and so she always addresses Shinka as “Fake Mori Summer”. Sanae is very intelligent and has the best scores in her whole grade. At the end of the series, she is shown to come from a wealthy family, in one instance arriving at a location in an upper-class sedan with a butler in tow.


She has very long blonde twin-tails tied with small weighted bags that she calls "Mighty Mjolnir Maul”. She has blue eyes and can be considered short.


She hates milk and other dairy products. She respects her master, Rikka but does the opposite towards Shinka. She is quite popular in her class because she has excellent mathematical abilities. She has already finished the middle school math curriculum and can solve high school questions easily. She often ends her sentence with "desu", likely because it sounds similar to the English word "death".


Season 1

Takanashi Rikka Kai ~Gekijou-ban Chuunibyou Demo Koi ga Shitai!~

Season 2

Chuunibyou Demo Koi Ga Shitai Movie -Take On Me-


  • "Everyone knows that the more taboo something is, the more stimulating it is... "
  • "De-de-death!!"
  • "You should introduce yourself before asking the same of someone else."
  • "First-year high school problems should be no problem for me."
  • "I am agent of the eye of the wicked lord, Rikka Takanashi's number one servant, the one who wields the Mjolnir Hammer - Sanae Dekomori!!! Rejoice for I have a right!"
  • "Save me, Fake Mori Summer!"


  • The name Sanae means "early, fast" (早) (sa) and "seedling, sapling, shoot" (苗) (nae).
  • Sanae is one of the many characters not to appear in the light novel.
  • Sanae comes from a very rich family.
  • Sanae is a genius at mathematics, which makes her very popular among the first-years.
  • Sanae's first kiss was with Shinka Nibutani, which was actually an accident.
  • She often adds the prefixes "-desu" or "-desuka" to hilight her sentences.


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