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

Loli Version tags:

kamaelloli, 1girl, solo, long hair, shirt, long sleeves, standing, jacket, yellow eyes, white shirt, ahoge, grey hair, necktie, belt, pants, vest, coat, brown footwear, formal, suit, blue jacket, red necktie, blue pants

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