- Best Known for the Fanservice: Inverted in the second episode. The way Hinako sleeps in the bed, doing a cuddly pose and breathing calmly was seen by most as something comforting and cute rather than arousing, despite the blatant panty shots on the episode.
- Critic-Proof: Literally every review by any serious anime critic has condemned the seriesnote , yet as noted on the main page, all entries of this franchise sold incredibly well. It's likely because of the success of the first two that the third was even created.
- Hilarious in Hindsight: As Japanator noted, a similar concept to Sleeping was seen in a 2004 exhibit in the London National Portrait Gallery that amounted to an hour-long video of David Beckham sleeping, six years before Sleeping was made.
YMMV / Training with Hinako