Is It Odd That I Became An Adventurer Even If I Graduated From The Witchcraft Institute?

Is It Odd That I Became An Adventurer Even If I Graduated From The Witchcraft Institute? summary:

Having graduated from the prestigious Witchcraft Institute at the top of his class, no job is out of reach for William Glenford. But William dreams of only one thing: adventures.

Finding companions in a guild with a party of girls including a cleric, a martial artist and a beastman catgirl, and being ranked the lowest at the entry level, they immediately begin noticing that he's grossly overqualified for his role... and that this mage may not be a mere "mage", but a full-fledged wizard.