So, here is my episode 4 review. Let's go!

We start with the Principal talking to Mrs Sakurai about discipline and the need to better enforce it. This is the setup for the first half of the episode and is quickly delivered before going to the OP.

After that, Mrs Sakurai is motivating herself in regards to new task of enforcing rules. She bumps into Sasahara, who is eating a cooked meal layed out on a tray he has hung from his neck. There's also wine, because eating in the halls is something Sasahara does with sophistication. Naturally, Mrs Sakurai freaks out. But she tries to take Sasahara on. It works, amazingly. This is the first time Mrs Sakurai has done this telling a student off thing successfully and with Sasahara of all people. Of course, Sasahara feels the need to loudly declare that those who prepared his food should be notified that he found it delicious. Instantly, Misato is behind Sasahara with a minigun. So, she too has a special power. Everyone seems to do in this anime, but I guess that's to be expected in this shounen ani...wait, this is slice of life? Whar?

Well, I hope Misato has better amunition this time. Mrs Sakurai nervously reprimands Misato on the minigun she has. But a person suddenly calls Misato over, so Mrs Sakurai doesn't have to deal with that. She then asks Sasahara about his cravat, which she calls a frilly thing. He first responds with a random bit about how their ordinary days might be a series of miracles, with Sasahara and Sakurai being shot as though this is some super meaningful moment. Then Mrs Sakurai asks Sasahara aboiut the cravat again, since she doesn't know it's name. He laughs and says he'll tell her it's name. He then leaves without finishing the sentence of “It's name is...” with a actual name. But this is actually better than usual, so Mrs Sakurai is happy. This is very good day for her in terms of accomplishments. Well done! So it has to finish off with Sakurai asking a student about their hair and that student becoming upset, loudly confessing after being pushed by Mrs Sakurai that their hair doesn't grow on the sides.

We get a random bit where a student is counting for a game. When he turns around from the wall he was facing, he gets told by another student that the others involved in the game have gone home. Oh, the transition bit for at this point is a shot of a urinal. That's odd.

Nano and the Professor are doing food shopping. Nano's dealing with the problem of taking a young child around shopping. The Professor wants snacks and has zero interest in healthy foods. Plus, she already has snacks back home. But Nano does accept that they can get some snacks for Sakamoto. While looking for those, the two notice a snowman on the sehelves and Nano asks a store worker about it. It's actually made of ice and some other people express interest in it. But Nano decides to buy it. You know, because it's cute. Yeah, that makes total sense in regards to buying something that'll melt and that you'll be shaving ice off for shaved ice treats. The Professor uses this brash impulse purchase to leverage some snacks out of Nano. It is understandable when Nano got a snowman for herself. Well, Sakamoto is stunned by this. He doesn't care much, as long as he has his own food. 

Yeah, Nano forgot that, thanks to the distraction of the snowman. So, your meal is shaved ice, Sakamoto. Enjoy! Hmm, are there actual frozen treats for cats? I wonder.

We get the rock paper scissors game between Nano and the Professor again. This time, her hand launches into the air, with a cord attached to it that links to to Nano. It stops extending after a point and pulls Nano up into the air. Come back, Nano! We still need to do the rest of the episode!

Okay, next bit. All the students are in class and working. Mrs Sakurai has fallen asleep. Yukko is looked freaked out at something. That turns out to be Mai standing on her desk while no one pays any attention to that, apart from Yukko. Then Mai is suddenly gone, Yukko looks around and then finds Mai behind her, lying on top of the lockers. She then lifts her hand up and has a finger touch a hand drawn behind her with it's own finger extended, like that famous painting with man reaching out to god. Hmm, perhaps it is Mai who is meant to be God. Yes, that makes perfect sense! God is an anime girl who does random stuff to screw with people.

Yukko tries to get Mio's attention, but Mio just thinks it's an eraser Yukko's after and hands one over without even looking at Yukko. Then Mai is back at her desk, but is taking off her hair. Yukko freaks out at this. So does the Principal, who we see through the class window. Then the bell rings, stirring Mrs Sakurai and getting her to end to test. We then cut to Mai and Yukko on the rooftop with Mai holding the wig she wore for the whole no hair thing.

We get a bit with Mrs Sakurai in the office, musing on thinking about what others want and what you want. It's not a joke, but it's short and nice.

We get another bit with that person playing the game from earlier. He is still trying it with no one around playing with him and the person who told him the others had gone just telling him to stop already.

Yukko goes up to a window, tired. Then a bird, some sort of exotic bird, appears and tells her that it has gotten used to this form. Yukko freaks out.

Nano is cooking umeboshi. Sakamoto tries one, but they aren't cooked yet. The Professor gets a foxtail from the garden and says she can play with Sakamoto with it. Sakamoto isn't pleased with the way he is adressed and the Professor keeps using the undesired form of address while trying to apologise, annoying him further. Nano goes shopping, leaving Sakamoto with the Professor. She annoys him further, though the way she sways the foxtail left and right begins to distract him. Then the Professor leaves him to got to the loo, giving him a moment to think. He thinks about how he is the only adult there in the house and will have to take a parent role, an attempt at being mature which is hard to take seriously when Sakamoto starts playing with an eraser part way through his inner monologue and gets seriously into playing with it. Then the Professor pops back and wonders what he was doing. So save his dignity as the self-proclaimed parent, he says he was sleeping. Then he gets distracted by a fly while trying to explain himself and starts trying to swat it. He then gets distracted again by the foxtail and leaps at it. Yeah, mission accomplished, Sakamoto. The Professor will surely take you seriously now that you've gone full cute kittie in front of her.

*sighs* Why won't cats ever go full cute kittie for me in real life? Whyyyy?!

After that, we see the hair guy from before at home, trying to arrange his hair to look more normal. It works, but his mum pops in and both of them freak out.

Yukko and Mai are outside, after school. Yukko spots Mai reading a book hidden by a book. Yukko says this is likely part of Mai working to her role as the funny man. But she decides to poke fun at 4this anyway. This annoys Mai, who says her good jab effectively overshadows her funny man act. It's amusing in a way, since Mai is the most serious in the way she acts. But I'd say Mio is the straight man of the group, while funny man of the group is potentially applicable to Mai. Anyway, Yukko is actually a bit confused about what Mai is doing. Mai says she doesn't need to explain and thought Yukko would just understand, since she;s quick on the uptake. Then it gets briefly tense with Mai saying they aren't friends. Mai clarifies a moment later that they are best friends and thus don't need words. Yukko says some words are okay and tries to hug Mai. Mai pushes her back and it's tense again, with Mai saying she shouldn't do that. Then it gets odd, with Mai saying she'll fall further in love with Yukko. Yukko thinks this is a best friend sort of love, but Mai tries to clarify. It's the romantic sort of love thaty girls normally have for guys. Yeah, so Yukko freaks out at this.

It was a joke. Yukko says she believed it, then tries to lie her way out of that. Mai then says, very seriously, that she hates people who try to lie their way out of situations. Yukko apologises.

It was another joke. Yukko is just utterly confused at this point. Also, the comment about Yukko being quick on the uptake was meant to have Yukko respond with “No I'm not” as an alternative setup for a joke than the whole sudden love thing.

Well, in my opinion, that was an improvement over episode 3. It was very funny. There was no super animation moment, but all the jokes worked wonderfully.