am i being cheated?

i just started a new paper with a new mentor, and basically, one of his other med students is supposed to be first author. This is totally cool with me, as im currently prioritizing step 1/comlex 1. but this kid basically just sent me an outline with each author's name next to their topics and his name is not anywhere on it. Is it normal for the first author to only create the outline and give feedback? This kinda feels like I'm being cheated out of first author. Meanwhile he already has almost 40 publications. God I hate med students!! how toxic can you be?!

Sorry for the vent. Just wanted to know if this is normal before I email him. Any suggestions for how I should phrase it? I'm thinking I might just be honest and say that I don't really think that is fair.... I just don't want to risk having issues with my mentor because he is prominent in his field. Would you do all this work for second author? What should I do?