Risako in her 'secret agent' mode. Risako Nagisa ( 凪紗りさこ) is the villainess in the OVA Aika R-16: Virgin Mission (2007, Studio Fantasia). She's voiced by Naoko Suzuki (Japanese) & Tara Platt (English). In Aika Zero she is no longer a villainess.
Risako (or Risako-sensei, as she is referred when in school) is introduced as the teacher of Aika Sumeragi, the 16-year old heroine of R-16. In her role as teacher she dresses conservatively and wears her hair up. She is shown to be a serious teacher and strict disciplinarian, harshly punishing Aika for her frequent tardiness.
This seriousness is carried over in her role as secret agent, where she has no problem using physical force against her female students in her attempt to keep Aika and the club from achieving their goal. She is also shown to have a playful and seductive side. For, even when she is still seen by her students as their teacher and club advisor, she lounges around in a bikini and openly teases a young Gusto, shocking her female students. This duplicitousness makes her appear very dangerous, as she is obviously a capable woman in whatever role she plays.
In contrast to the way she dresses in school, Risako seems to prefer sexy and revealing clothing.
She is also very powerful. Her combat prowess is probably equal to that of older Aika, as she is only defeated after being attacked from behind by Karen Minamino.
The many appearances of Risako Nagisa.
Risako in her role as teacher. Conservatively dressed, she scolds Aika for being late.
Risako is a very strict teacher
Risako tells Aika she has to wash ALL the school’s windows as punishment!
As Aika’s teacher, Risako administers harsh punishment!
Students are clearly afraid of Ms Risako
Risako patrols the hallways at school
A more mysterious side to Risako is revealed.
Gusto is obviously distracted by the shapely Risako
A teasing Risako. Outside of school her personality and dress changes.
The girls are not happy with Risako’s behaviour
The skimpy bikini bottom of Risako
Risako relaxes in her revealing bikini
Risako’s “assets”are on display!
Drooling over Risako!
Risako makes sure the boys get a good view!
Risako loves to flirt!
Risako looks seductively at the boys on the trip
Risako is one sexy club advisor!
Sexy Risako knows she drives the boys crazy!
The boys are blown away by Risako!
Not everyone is pleased
“Everybody here should just go to hell!”
In the evening, Risako knocks on a door...
...a student answers...
...Risako, dressed in revealing lingerie, knocks the student out!
Risako is revealed as a villainess!
Risako is on a secret mission! What is it?
Risako has programmed girls to attack classmates!
Risako is kidnapping a student! She slings her over her shoulder!
Risako and her forces have incapacitated most of the students!
Risako is kidnapping Karen.
A humiliating position for Karen on Risako’s shoulder!
Risako guarded by one of the girls she programmed to obey her!
Still holding her kidnap victim, Risako realizes it won’t be an easy escape!
Someone is here to stop Risako!
A sniper is serious about stopping Risako!
Risako is caught in a searchlight!
Risako tosses a gun to her guard!
The guard is taken out by the sniper!
Risako has almost escaped with Karen!
Aika charges toward Risako!
Risako hears someone coming...
...she turns around and...
...and gets speared by Aika!
Risako gets to her feet.
Risako recovers after being speared!
Risako taunts Aika
Risako escapes as Aika watches
Risako on board a helicopter
Calling her boss
Risako reports her kidnap attempt was unsuccessful
Risako will need to make another attempt
This bikini is even skimpier than the white one!
Risako approaches the beach in another revealing swimsuit!
Ready to make another kidnapping attempt
Risako arrives with her henchwomen
Aika sees Risako approaching
All of Risako’s henchwomen have beem defeated!
Risako is ready to use her assets in battle!
Gusto is intimidated by the boobs of Risako!
Gusto tries to stop Risako’s evil plans
Risako in obvious control of her own sexuality.
Gusto has just been tossed aside by Risako’s cleavage!
Risako tells Karen to come with her!
Aika leaps to Karen’s defense!
The arrogant Risako is ready to destroy Aika!
Risako has no trouble beating down one of her students.
Risako argues with Aika
Risako battles Aika
Risako doesn’t look worries as Aika tries to punch her!
Risako easily avoids Aika’s punches!
It is so easy for Risako!
Risako effortlessly dodges Aika’s kick!
Another miss for Aika!
Risako takes Aika down with a leg sweep
Powerful Risako looks down on her student Aika!
The villainess puts her foot on Aika’s chest!
Risako tells Aika she didn’t wash enough windows!
There were too many windows!
Risako at her most dominant.
That is why it was a perfect punishment!
Aika twists Risako’s ankle...
Risako’s reaction to Aika twisting her ankle
...and throws her off!
Risako lands a huge punch!
Risako regains the upper hand!
Aika is in deep trouble!
Risako in complete control!
The evil Risako throws her student to the ground!
Aika has a painful landing!
The scantily clad Risako moves in to finish her opponent off!
Risako jumps on top and pins Aika down!
”Sweet dreams,” Risako says as she is ready to knock out Aika!
Suddenly Risako feels something on her back!
Someone is attacking Risako from behind!
Risako turns to see who is behind her
It’s Karen! Risako sends her flying with a violent punch!
Aika sees Karen get hit by Risako...
Aika throws sand in Risako’s face
Risako is temporarily blinded by the sand!
Aika headbuts Risako in the face!
Risako is reeling from Aika’s blow!
Aika gains the advantage!
Risako is rocked by a big kick from Aika!
Aika is on the attack!
Aika folllows up with another kick to Risako!
Risako desperately tries to hold her ground!
Risako is in trouble!
Aika’s final kick knocks Risako out!
After getting knocked out, Risako is tied up!
Gusto binds Risako’s wrists
Risako says she already gave up and asks if it is really necessary to tie her hands.
Aika questions Risako
Risako is still defiant after being tied up!
Aika is angry as Risako refuses to cooperate!
Risako taunts Aika
”They’re listening,” Risako tells Aika to give up!
“What is it now Karen?” Risako demands.
Karen shoots Risako with a tranq gun!
Risako losing consciousness!
Down goes Risako!
Risako about to be stripped by Karen!
Like a true secret agent, she has something hidden in bathing suit.
Risako is out cold as Karen searches her bathing suit!
Karen holds the transmitter she discovered in Risako’s bikini
Gusto is shocked to see that Aika and Karen have defeated Risako!
After having the transmitter removed from her bikini by Karen, Risako‘s last hope for help is gone!
Gusto slings a defeated and unconscious Risako over his shoulder!
A humiliating position for the arrogant Risako!
Risako, still knocked out, being carried by Gusto.
No longer intimidated by Risako, Gusto complains about having to haul her away!
Bottoms up! Risako and her henchwomen, captured and unconscious, will be tied up and put in a storeroom!
After defeating and capturing Risako, they are off for more adventure!
After Risako has been defeated by her students, she gets draped over Gusto’s shoulder.