* Every time [[BunnyEarsLawyer Karin]] gushes over something or freaks out. Especially if she's gushing over her dream of a "sweet home, with a wonderful husband and a cute pet! Even if I haven't found the husband yet".
** Also, every time she shows she's a FishOutOfTemporalWater. They tend to overlap with the above.
** [[RuleOfThree To make three]], every time she's an overly aggressive [[TheMatchmaker Matchmaker]] between Junta and Ami.
* Ryuuji trying to make sense of getting dumped by Tomoko and his jealousy for Junta.
* In the second episode, Tomoko has invited Junta to a bar, and tries to apologize to him for how she led him on earlier. He goes into Mega Playboy mode, they are about to kiss... Then we're treated to Tomoko's recently dumped boyfriend Ryuuji flattening his face on the window in his jealousy, the owner interrupts the moment because [[ThePornomancer every girl in the bar has started lusting after Junta]], Junta returns to normal and sees Tomoko's cleavage, and his allergy to women kicks in.
* Ryuuji's thugs ''shouldn't'' be here... But imagine three random ''Manga/FistOfTheNorthStar'' {{Mooks}} in a bar for couples, add the fact one of them has pointy ears, and try not to laugh.
* After the thugs above have fallen to Mega Playboy!Junta going Super Saiyan on their asses, Karin comes down ready to deal with the Mega Playboy, having to get rid of him at all costs. [[ThePornomancer Then she looks at his face up close, and falls for him.]] The only reason she didn't jump him then and there was that she had not slept for days, and the sight of the Mega Playboy broke through the nervousness that had kept her awake until then...
* At the start of episode 3, [[BedMateReveal Karin realizing she's in the same bed as Junta]] and wearing only lingerie, and then him going Mega Playboy and her trying desperately to resist his power. Trying and ''failing''. Good thing Ami shows up and snaps him out of the Mega Playboy state... [[HilarityEnsues At which point they have to try and avoid Ami finding a girl clad only in underwear inside Junta's bedroom]].
** After Ami ''does'' see Karin and gets the wrong impression, Junta's mom Chiyo shows up. And we finally find out ''why'' Karin is wearing only a bra and a pair of panties: ''Chiyo replaced her suit with the lingerie in her sleep because she was sorry to have her sleep in that "[[BuffySpeak rain cape-thing]]"''.
** After the above, Karin apologizes for suspecting him of undressing her, and he tries to smooth-talk the cute girl. [[EpicFail Emphasis on try]]. Especially as Karin has decided it will be good for the rest of the world that Junta hooks up with Ami, and in the attempt to convince him she drops the sheet she was using to cover herself...
* The first time Junta goes Mega Playboy on Ami. The one girl immune to the Mega Playboy's charm.
** In general, every time Ami's disgusted reaction to the Mega Playboy is compared to every other girl swooning at his appearance.
* Tomoko calling Normal!Junta a playboy. Right after he snapped out of Mega Playboy mode. She then ropes him into going shopping with her.
** When they met in the mall, Tomoko took a necklace Junta had bought for Karin. When she goes in a dressing cubicle, Junta tries to use the situation to tell her who he had bought the necklace for... But before he can talk she ''pulls him in the cubicle and offers to make sex with him then and there''. [[HilarityEnsues And of course, they nearly get caught by a shop assistant, with Tomoko hiding Junta behind herself and keeping her butt on his face]].
** Karin's failed attempts at ruining their impromptu date, and her reaction to the failures and Tomoko escalating.
** In the end, Tomoko has Junta bring her in ''his bedroom'' and starts putting the moves on him there ([[{{Irony}} justifying herself by quoting Ryuuji and his DNA bullshit when he was convinced Tomoko would never break up with him]]), risking to bring out Mega Playboy for good. Karin's reaction? ''Barge into Ami's room and get '''her''' to interfere''.
* The first encounter between Kotomi and the Mega Playboy. Junta is advancing to her, she's blushing... Then Karin hits Junta with an hammer, apologizes to Kotomi, and drags away Junta.
* After Karin's latest aggressive intervention, Ami is about to confess to Junta... [[MomentKiller Cue Kotomi getting nervous and ruining the moment]] [[{{Gasshole}} with a fart]]. At least she apologizes...
* Mega Playboy going on a date with Kotomi and bringing her in a zone full of love hotels ''completely by accident''.
** He doesn't want to get a room (possibly because he's pennyless), so he brings her in a side alley and starts groping. Kotomi is obviously nervous, [[{{Gasshole}} she's doing the impossible to not fart]]... [[HilarityEnsues And then Junta returns to normal while he has a hand on Kotomi's butt]].
** Junta manages to not barf, and ends the date with dignity and in a friendly and somewhat romantic way. In the meantime, ''[[MomentKiller Karin is barging in every single room of the love hotels to try and stop the Mega Playboy from scoring his first girl]]''.
** The corollary to all of this: the day after, on the school's rooftop, Karin gives Junta a piece of her mind, Junta replies she looks jealous, then moves closer, very close, his face nearly touching Karin... And then he steals the receivers of her tracers and tells her he knew she had just put one on him during the [[WrestlerInAllOfUs pilerdriver]]. We later see her in her time machine gloating she has ''tons'' of spare receivers while spying on him with a flying camera.
* Episode 6 has Kotomi's attempt at seducing Junta, masquerading by having him help with [[{{Gasshole}} her problem]]. It starts with her [[SensualSpandex showing up in her leotard]], it continues with [[ZipMeUp having him close the zip of her leotard]]), and is contrasted to Junta's attempt at keeping ''his'' problem.
* Pretty much every time Oharu, the AI of Karin's TimeMachine, speaks it proves itself [[LargeHam hammier]] than its owner. Here's the first and relatively ''tame'' time:
-->'''Karin:''' "I want you to check if I caused a history-changing problem when I injected Momonari Junta with that DNA Control Medicine."
-->'''Oharu ''*sounding bored*'':''' "All set with that check... Probability that the DCM has caused Momonari Junta to become the Mega Playboy is... [[SuddenlyShouting 120 PERCENT!]]"
* After receiving the right DCM bullet, Karin decides to get Junta on the school's roof and snipe him from away. She cocks the hammer, takes aim, tries and convinces herself she ''has'' to shoot, both for her dream and to avoid execution, finally pulls the trigger... And fails to fire because she has subconsciously ''put her thumb between the hammer and the firing chamber''.
* In episode 10, Ryuuji's newfound ability to [[spoiler:[[VoluntaryShapeshifting shape-shift]]]] provides some fun:
** First, we have Ryuuji and Tomoko dealing with the discovery of the ability, that happened when [[spoiler:Ryuuji transformed into Tomoko in a bathroom]]: Ryuuji, after desperating for a moment because he would never be able to kiss Tomoko anymore, decided to [[spoiler:''[[ManIFeelLikeAWoman grope himself-as-Tomoko to feel her body]]'', only to later see that only his face has transformed (thus he had groped his own ''manly'' ass)]]; immediately after that, Tomoko barged in, saw Ryuuji with open shirt, pants and boxers down, and [[spoiler:her face]], blushed, calmly came out, closed the door, and then screamed [[spoiler:"AAAAAAAAAAAAAAAAHHHHHHHHHHHHHH! I'M IN THERE!"]]. Thankfully, by the time Ami and the school's nurse (called because Ryuuji had been shot, after all) came in Ryuuji was back to normal...;
** When Ryuuji is molesting Ami while [[spoiler:wearing Junta's face]], he touches her leg... And then suddenly [[spoiler:absorbs her DNA and transforms ''completely'' into her, not just the face but the whole body, boobs included]].
* When Ryuuji gloats to Junta about [[AttemptedRape what he did to Ami]] while [[spoiler:wearing his face]], [[MistakenForGay Junta at first believes Ryuuji is hitting on him and blushes]].
* When Karin decides to take down Ryuuji, she finds him and has one thing to say:
-->'''Karin:''' "[[LampshadeHanging Wh-What's with that outfit?]]"
-->'''Ryuuji ''*[[FashionVictimVillain dressed in the most ridiculous outfit of this series]]*'':''' "Appropriate clothing for one with powers such as mine."
** When Junta arrives, he too is befuddled at Ryuuji's outfit. This coming from a guy who [[AnimeHair has the same hair as Gohan as a Super Saiyan, only reddish-brown]].
*** The manga reaction is even better, as Junta first sees Ryuuji's new outfit when his rival appears before his home... And [[SelectiveObliviousness tries to ignore him in disgust at the costume]].
* [[ThoseTwoGuys Someya and Ichikaya]] forcing Junta to hold a few karaoke nights at his home in a row to see Karin.
** Chiyo ''singing the opening''.
** Drunk Karin.