- Episode 4: Maki's dad is a president of a company named True Tree, which makes lingerie. Much to poor Maki's embarassment, Sayo and Eno decide to show the other girls an advertising video, in which he first says that his body is made of lingerie, then proceeds to sing a hilarous song about underwear.
- In episode 6, after failing to recall who the good looking guy talking to her was from when they were younger, Riko starts wondering about it as she heads home. Her brother passes by shortly afterwards, and sees her go up in metaphorical flames. He then immediately takes her home, and says:
Rentarou: Mom its an emergency! Nee-chan suddenly burst into flames on the side of the road!