Toru

For anyone who is interested, they will start releasing a manhwa adaption of "Kiss the scumbag" on December 14th. Same universe, but not part of the "Kiss me" and "..if you can" series.
Keith will have a cameo there, he is friends with the ml. Nathaniel also has cameo.
Spoiler of not adapted KML side stories
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Angela, the daughter of the pairing, is later friends with Spence.

For everyone who is interested in Chase's oldest brother's story, willing to use a translator or search for fan translations:

After it was postponed a few times, there is now an announcement on ridibooks that they will start releasing the webnovel "Run Away If You Can" next week, on the 1. October in Korea.

Nathaniel Miller: Dominant alpha ( manifested when the twins were born). Oldest son of Ashley Miller and Connor Niles. He is the boss of the Miller and Associates? lawfirm, he took over when his father went into politics. He appeared in the Extras of Lick me up if you can as a baby/ child. Was mentioned in KMIYC and DMIYC several times. And has a cameo in Kiss the scumbag.

Chrissy Jean: Beta. A prosecutor. He is mentioned in Kiss me if you can, in the second chapter, the newspaper article is about him, although his name wasn't mentioned. And Grayson mentioned that Nathaniel lost to him in one case.
He also has a short appearence in the epilogue of Grayson's story Desire me if you can.