Can you be any more tsundere?
Rito, Momo and friends attend the summer festival and all of the females are decked out in yukatas. Nana runs off to meet Mea; Mikan is hanging around with Tearju, Mikado and Oshizu, and Lala and Haruna are waiting around for Yui; and so Momo ends up with Rito. While walking around, Rito and Momo run into two members from Momo's fan club. The two guys start imagining Rito doing perverted things to Momo such as making her lick candied apples in an erotic manner and stuffing water balloons in her yukata. Momo and Rito ditch the two guys and end up alone for the moment. Rito asks Momo about her mother, and Momo states that she and Nana don't see their mother that much since their mother is busy doing all of the diplomatic work that King Deviluke is terrible at. Momo then gets all hot and bothered around Rito and thinks about her harem plan. However, Momo's train of thought is interrupted when Mikan appears telling them something is wrong.
Apparently forcing someone to lick candied apples is erotic torture.
Momo and Rito follow Mikan and Rito runs right into Yami and as usual they end up in an embarrassing position. Yami threatens Rito with a beating and warns Rito that she will kill him whenever she chooses to. To everyone's surprise, Mikan asks why doesn't Yami kill Rito now and she transforms into a dark-skinned loli with long black hair. Yami, Rito and Momo realize that the person standing in front of them is none other than Mea's master Nemesis.
Rito breaks his own record of the fastest grope after new girl introduction.
Nemesis appears as a dark-skinned loli with long dark hair. Rito, being Rito, instantly trips and gropes Nemesis and puts his head between her legs. Nemesis thinks Rito is funny and commends him for being able to sneak-attack her. Nemesis then teases Rito by temporarily transforming into a more curvy, mature form and then states she wants to make Rito her slave. Momo has finally seen enough of Nemesis' teasing and intervenes, but Nemesis grabs and starts teasing Momo's tail mercilessly and puts a ninja-themed yukata on herself. Yami has finally seen enough and warns Nemesis with her hair blade, and as Nemesis loosens her grip Momo tries to blast Nemesis in the face with her tail laser which Nemesis dodges. Nemesis jumps on top of a light pole and explains she's not here to pick a fight. Instead, Nemesis is just here to say hello and want to get along with Yami and her friends. Yami wonders why Nemesis is showing herself now, and Nemesis answers that after the intel she and Mea had gathered, she decided that there is no point hiding anymore. Nemesis wants Yami to become a weapon again, but Nemesis knows that Yami has the "darkness" inside her heart and Yami will find it by herself eventually. At this moment, Yui appears wondering what's going on, and Nemesis uses the chance to make her exit.
That's enough. This is my show and you are stealing my spotlight.
Later, everyone gathers to watch the fireworks. Momo and Rito tell Mikado, Tearju and Oshizu about what happened with Nemesis. Oshizu voices that she doesn't trust Nemesis, and at this moment Mea and Nana appears and Mea defends her master. Oshizu states that she doesn't trust Mea either and the two are about to start a fight before being told off by Mikado and Nana. Mikan is watching everything and, after recalling her conversation with Tearju, thinks that she should get along with Mea too. However, Mea's teasing ways towards Rito may make that difficult. While Lala pulls Rito to watch the fireworks, Momo continues talking to Mikado and Tearju and mentions what Nemesis had said about the "darkness" in Yami's heart. Tearju thinks that Nemesis may be talking about the forbidden transformation, but she declines to reveal the fact to the others. Tearju hopes that Yami will be fines if she remains here with all of her friends.
Just because Mea is Yami's little sis doesn't mean she's anything like Yami.
This episode covers chapter 23 and 24 from the manga, and it is significant from the story standpoint as the main "villain" Nemesis officially makes her debut. It's also special because Rito breaks the all time record of groping someone right after meeting them, and he managed to do it pretty much right after Nemesis reveals herself. From this episode, we can tell Nemesis is a mischievous individual who like to tease and make people her servant (as she has declared with Rito). She also seems to have upper hand against Momo. Now that Nemesis is out in public, this can only mean more trouble for Rito in the future.
The episode followed the manga material pretty closely, but the animation quality was a bit disappointing. What's with all the grey people in the background that don't move during the festival? Looks like Xebec is already out of budget, and it's not like TLR Darkness has any fancy action or effects. Also, I was disappointed that they didn't include Yami's shocked face from the manga when Rito tripped and fell onto Nemesis. Yami's face was one of the highlights of the chapter, and they didn't include it in the anime. Boo!