The story revolves around Tomoya Mizuhara, a 13-year-old boy who suddenly gains a big sister when his father remarries. 17-year-old Ichika is a little strange, and her affection for Tomoya is rather overwhelming, if not scary. On top of things, Ichika's friend Ruri is the ultimate sadist. Then there is Ichika's big-breasted quarter-Japanese friend Marina.
(Source: ANN)+ More
Characters & Voice Actors

Mizuhara, Tomoya
Main
Terakawa, Aimi
Japanese
Mizuhara, Ichika
Main
Nagatsuma, Juri
Japanese
Eiko
Main
Udono, Mayu
Japanese
Fuji, Souichirou
Main
Takahashi, Kouji
Japanese
Fujisaki, Mina
Main
Kido, Ibuki
Japanese
Hanazono, Mitsuru
Main
Kobayashi, Yuu
JapaneseRecommended for you
Actually, I am...
TV
23m
Kiss x Sis
OVA
24m
Lupin III: Voyage to Danger
Special
90m
Pretty Cure Max Heart
TV
25m
Generator Gawl
TV
24m
My-Hime Specials
Special
1m
[RAW] Onegai! Samia Don
TV
26m
The Asterisk War
TV
23m
Demon King Daimao
TV
23m
Love is Like a Cocktail
TV
3m
Ninja Nonsense
TV
24m
By the Grace of the Gods
TV
23m