based on my feelings who have replayed 7-8 times. I think Caribdis has a slight bias towards Lauren. Lauren has a lot of scenes that I feel are really romantic with the main character while her sister has a few scenes that seem to be not romantic enough. let me give you an example
lauren has a few scenes with the MC like in prison, massage, bath, yakuza.
MC shows his love by protecting Lauren from the Yakuza at all costs and the two watch the moon while holding hands later, in the prison when the MC says he misses Lauren while sleeping, scenes I just said it doesn't need too much action, dialogue, but it is enough to show us how deep the feelings of they are.
Judie makes me feel like I have a little sister that I have to protect, although it's very good, it really doesn't leave a good mark as
Lauren.