In the second episode, a worried Satou imagines that if he doesn't meet Misaki at the park tonight, then a masked pervert will molest her. Followed by the news media starting a witch hunt, blaming Satou for failing to protect his friend.
The entire dream analysis. "C'mon, tell me about the snake with the rock-hard scales..."
At the end of the episode where Satou realizes that he's accidentally joined a suicide pact on a remote island, his final narration is "This is the worst vacation ever!".
Misaki stopping Satou's suicide attempt, also doubles as heartwarming.
Satou: I am nothing! I am just a rock on the side of the road! [About to jump]
Misaki: You're wrong!
Satou: [Stops] Eh?
Misaki: You are not a rock on the side of the road! You are a human being! A flesh and blood, total failure of a human being!
Misaki: A Hikikomori like you is more worthless than a stray dog! You are... you are the only person in the world more useless and a waste of space than I am! So... so... please, you can't die now... you just can't! I need you... I need you! [Cries]
Satou: ...I'm jumping!
And then Yamazaki convinces Satou that jumping off a cliff is too dramatic a death for a loser like him.
And then Satou slips and nearly falls off the cliff by accident.
"There sure are some stupid people in this world, Hahahah.... WAIT A SECOND, THAT'S US!"
Satou downloading two hundred gigabytes of porn in one night. Two hundred gigabytes. Of porn. In one night!
Keep in mind this was set up in an area before HD porn was common, and harddrive space has smaller.
Activating Hyper Self-Pleasure Mode!
His mom walked in while he's masturbating to porn on 5 or 6 computer monitors. This scene is sadly manga-exclusive.
The MMORPG arc will have you laugh like a lunatic while simultaneously bringing out the Big "NO!". All those games go like that. Search your feelings, you know it to be true.
The "Dame dame dame Ningen" (Failure of a Human) song while Satou is doing nothing but playing his game.
Misaki's awkward attempts at getting a game-addicted Satou's attention, by dressing in strange costumes.
Yamazaki enters Satou's apartment and reveals that he was "Mia" all along. Yamazaki manages to snap Sato back to his senses, and destroys his delusions about making money through the MMO game, by warning him of a hypotheticalBad Future: