I've come across a few ddlg (Daddy Dom/little girl) romance books that have manga adaptations. One standout is 'Sugar Daddy' by Lisa Kleypas, which, while not explicitly ddlg, has elements that appeal to the dynamic and has inspired manga-style fan art and doujinshi. Another is 'The Boss' by Abigail Barnette, which delves into power dynamics and has been adapted into a manga series in Japan, capturing the essence of the relationship with subtlety and artistry.
For those who prefer visual storytelling, 'Honey Come Honey' by Saki Aida is a manga that beautifully portrays a ddlg relationship with tenderness and depth. It’s a great gateway for readers new to the genre. Additionally, 'My Darling Signed In' by Konno Oyuki offers a sweet, slice-of-life take on the dynamic, blending romance with everyday moments that highlight the emotional connection between the characters. These works are perfect for fans who appreciate both written and visual narratives.