Yes. The Tonikaku Kawaii manga has reached its conclusion. It might have left fans with mixed feelings, but it wrapped up the story in a way the author intended.
Well, in the anime of Romcom Snafu, the visual and audio elements really bring the story to life. The character designs are more vivid and the voice acting adds depth. In the manga, you can see the unique art style which might have more detailed expressions sometimes. The novel, on the other hand, goes more in - depth with the internal thoughts of the characters. For example, in the anime some of the character's emotions are shown through their actions and expressions, but in the novel you can read all about their complex feelings in great detail.
The combination of cute and supernatural elements often attracts readers. The cute aspect adds charm, while the akuma element brings in an element of mystery and excitement.