A Possessive Yakuza's Ardor Series

30-year-old Rin Sakuma, who works at an event management firm reunites with her old flame, Kotaro Irie, on the site of a new project she is leading. He's now heading a security company, but he's actually the son of a Yakuza and the last person on Earth she wanted to meet again after their bad breakup back in high school. And to rub salt in the wound... He has grown to be an even more fit and suave man. She soon realizes her feelings for him have not disappeared and attempts to hide them by putting on a distant attitude... But that all goes to waste when he pulls her in for a...kiss?! It turns deeper and deeper until... He is on top of her and about to go even further...?! Is this all just a yearning for the past or is it so much more? Whatever the case, his fingers haven't forgotten where she likes to be caressed.

Rin Sakuma, an office worker in her mid-20's, enjoys her work at an event-planning company.
When she gets the chance to head a new project featuring her favorite idol, she jumps at the opportunity. Her fortune takes a dive, however, when she hired a security company headed by Kotaro Irie, her ex-boyfriend from high school!
Back then, Rin truly believed they were in love, despite Kotaro's fierce reputation as the son of a mob boss... but all that came crashing down when he cold-heartedly broke up with her, leaving her alone and traumatized to start dating ever again.
Now reunited as adults, Rin can't help but notice how handsome he's become, and try as she might, she can't lie to herself about her lingering feels for him. As she tries her best to hide her crush, Kotaro suddenly drags her into a passionate kiss... and seems intent on doing more!!