1-Vague bullshit that doesn't explain anything
The students of Akademi High find it very difficult to describe Geiju.
You're not the student tho, you're his character description page. Also, this isn't the only time he uses this exact words.
Everything typed here MIGHT be true or MIGHT NOT be, who knows? And who cares? This isn't a "mysterious" character, this is literally a "no concerete personality so you let the fans guess/headcanon one" character.
2-Contradictis itself intentionally for the sake of sounding clever and well writen while in reality it's just dumb.
His artwork is widely regarded as being very impressive - but he is frequently seen scrapping his work and starting over from scratch for no apparent reason.
What exactly is this supposed to mean? It very impressive because he takes his time and it's scraped because he didn't like it you fuck.
He seems to dislike being distracted while painting, but will always make time to critique others' artwork if he is asked to (and sometimes without being asked to).
"He seems to be like this but at the same time he isn't like this."
Many students wonder why such an asocial person would want to become a club leader - but regardless of his reticent nature, he does a proper job of operating his club.
Indeed, i really fucking wonder why this ASOCIAL guy would bother taking all the responsabilities of being a president if he just cares about art. Seems like unecessary work.
Even though he never says more than two words per sentence, he always finds a way to impart sagely advice that helps his clubmembers to drastically improve their art skills.
"He barely says anything and yet says everything."
3-Why do you refuse to write any good or original personality for the students????
Is he introverted and shy, or a cynical misanthrope? Is he a tortured soul, or a pretentious poser? Does he prefer to stay silent, or is there something that is forcing him to be tight-lipped? Nobody knows what to make of him,
It's you who don't know Alex. You realized how your shitty explanations always come to bite you in the ass later so nowadays you say everything "maybe it's this or maybe it's that". You made him "emotionless(tm)" and vague as possible because you don't know how to create write actual emotions.