The episode turns the emotional dial slowly, then all at once, like a kettle that has been patient for far too long. The episode leans on reruns of earlier moments, which is nostalgic the first time and less so the fourth. Meet Onii-chan, who has the air of someone who will be very important or very dead. If this episode had a tagline, it would be "I'll crush them one by one." Passable, if you are already invested.