The panels where Mitsumi announces to the Shiomi swim club that she'll become a lifeguard and then gets shoved into the pool after being told that she'd have to at least be able to swim 10 meters was originally from the first chapter of Kenjiro Hata's previous work Heroes of the Sea Lifesavers.
During Ayumu's fantasy of being married to Hayate, she mentions that they would own a mini-corolla. This is a reference to Toyota'sCorolla and BMW'sMini Series.
At the end of the chapter, the narrator says: "I am in no sense of the word a great artist, not even a great animator; I have always had men working for me whose skills were greater than my own. I am an idea man.". This is a reference to a quote used by Walt Disney.