Bottle Ramune, Baby-Star Ramen, and... / Yatta Men, Watch Out for the Sour Grape, and...Kokonotsu interrupts his father and Hotaru enjoying binramune late at night. While Hotaru explains the oddities of the dagashi, Kokonotsu comments on the apparent addictiveness of the snack, especially after watching Yō greedily drink it despite the fact it is supposed to be for sale. The two decide to make themselves right while Kokonotsu goes back to bed. Sometime later (1:30 am), Kokonotsu is once again reawakened, this time by his father making food vlogs; Yō states that he's doing it to make money from YouTube's ad reveune, but also admits to only having 13 views in total among his videos. When Kokonotsu decides to watch his father record, he sees that he reads from a script and doesn't have much to say about Baby Star Ramen; he decides to help by naming facts about the dagashi's origins, mascots and naming convention without realizing that the webcam is still recording. This ends up netting the video over 100 views. Later, Hotaru drops by after hearing that Kokonotsu & Tō are broke. She introduces them to prizes located inside packages of yattamen, even though the prizes function more as coupons rather than yen and that Hotaru goes through several without winning anything. She confesses that she's actually never won a candy prize in her life, but nonetheless introduces the boys to the "Sour Grape challenge". This involves a three-pack of grape-flavored gum with one of them being extremely sour; the person who eats the sour one has to do something for the winners. Hotaru believes she has the boys beat due to the gum's packaging giving away which one is the sour one, but she realizes she purchased a pack with new packaging upon double-checking it. The three eat a piece and Hotaru loses. Kokonotsu tries to encourage a dejected Hotaru by saying that her rotten luck could be seen as a type of talent. Regardless, Hotaru runs off in frustration before Kokonotsu & Tō realize she never upheld her part of the deal.