This refers to the third volume, chapter, or arc, where the conflict often deepens.

In Peach Girl Vol. 3 , the protagonist —often misunderstood as "easy" or "wild" due to her tan skin and bleached hair—faces a critical turning point in her relationship with her middle school crush, Toji . The story is driven by the malicious interference of her "best friend" Sae Kashiwagi , who thrives on sabotaging Momo's happiness.

In the context of the story, particularly in Volume 3, Kahlua is a middle schooler who is often used by Sae to manipulate situations or create drama for the protagonist, Momo Adachi.

As this is an adult doujin release, it can typically be found on:

Digital files or physical booklets sold at Japanese events like Comiket.

If you are looking to read the official, legal releases associated with these names rather than hunting down ambiguous internet search fragments, you should consult verified publishers: