Recommended tags:

kamael, solo, long hair, shirt, long sleeves, 1boy, jacket, white shirt, ahoge, white hair, male focus, necktie, collared shirt, parted bangs, facial hair, thick eyebrows, red necktie, beard, mustache

The unbuttoned clothing was my mistake that I didn't notice until the last moment, things about using the 'navel' tag, but nothing that can't be overlooked