Let us tell you all about Tomohiko Iwasaki's Mankowai, which everyone wants to know but is a bit hard to ask.

During a girls' talk, it is revealed that Mitsuko has never experienced cunnilingus from her boyfriend Tomowo. Furthermore, her mischievous friends threaten her, saying things like "If your boyfriend doesn't perform cunnilingus, you should break up." Mitsuko, after receiving this outrageous advice, tries her best to persuade Tomowo to perform cunnilingus on her.

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