Responses
You're right... on the cover his eyes look smaller, his face is sharper and has a wrinkle compared to the manga pages... It’s like not even the same person drew it
The banner it’s from the light novel, a completely diferente artist and style than the manga adaptation, he should look a lot older and “manly”, they are 17 years apart, idk why they made him look like a teen here.
Idk if its the authors style or whatever but he looks more scruffy looking on the banner but if you read the story then he looks like a teen boy. Have I been bamboozled once again. ( ´～｀)