Hard disagree. I love Azuma Sawayoshi-sensei's works, but I don't think a Harem fits here. (Akutsu's already got a girlfriend, he don't need a harem.)
I think this is kinda harmful to Lilia as a character if she actually does like Akutsu. She'd still be my second favorite character and all, but like coming up with a "Lilia likes Akutsu" plot at like, the 19th volume point, is a bit much and does nothing for her character and reinforces the idea that she feels the same things as Lily. I trust Sensei in his writing, but I'd definitely have to question the choice of making it a Harem at this point.