Goblin Slayer does take off his helmet in the manga. However, it's not a frequent occurrence and is often tied to specific story events that add depth to the narrative.
Maybe it's because the manga has an engaging story, interesting characters, or beautiful art. It could be a combination of these factors that keeps you hooked.
Well, accessing manga on Manga Rock is often not legal. So, the chances of finding 'Can't Take My Eyes Off Of You' manga there legally are slim. You should look for authorized platforms to read it.
You can access Can't Take My Eyes Off You manga on common manga reading apps. Reviews indicate that the art style is appealing, but the story might be a bit predictable for some readers.
The appeal lies in its unique plot, which keeps you hooked. Also, the character development is top-notch and makes you care about them. The visuals are amazing too.