C-2370 - Taking an acquaintance's wife on a hot spring trip 007

One or two films might make the 'acquaintance's wife' trope feel somewhat realistic, but turning it into a series just makes it feel ridiculous. I mean, who actually knows that many married women? And even if they did, how many of them are free to stay out overnight? The old guys' sex scenes are boring, too. I don't get why Takahashi, Karaki, and this guy never film facials. Honestly, there are barely any ejaculation scenes at all. All three of them are just plain boring.