The MEKA and the Mechanic (D.Va X reader)

Y/N is a new recruit to Overwatch, strategic, technical, and skilled. Hana Song was suddenly whisked into Y/N's life, and the two realize they have more in common than they think. Running missions that become more and more dangerous, Y/N and D.Va uncover secrets that have the power to change everything... Did Y/N bite off more than they could chew?