My current theory is that the author of the manga is someone who knows her, such as her father. The character in LoveNow is then based on her, enough that the author can predict how she would act in a given situation.
Actually from the one-shot he isn't the male prostitute. He discovers his classmate is a prostitute, who tries to seduce him to shut him up, and then the artist girl from this chapter walks in on them. She then pays the two of them to make out while she takes pictures.
"Phablets" never left, we just stopped calling them that. The OG phablets were around 5.5 inches diagonal (the 2011 Galaxy Note had a 5.3 inch screen, while the iPhone 6+ had a 5.5). Nowadays, the smallest iPhone available (13 mini) has a 5.4 inch screen, "normal size" phones are around 6.2...
There's With a Pay of 300,000 Yen Per Month, I Was Hired to Do the Fun Job of Saying, "Welcome Back," to the Onee-san Next Door Who Has No Use for a Monthly Salary of 500,000 Yen.
There's also She's Adopted a High School Boy!, though that one was completed a while back.