Very soon you are able to completely merge your will with his own. He can take hold of you when you are tired or weak or foolish--he can possess you, in a sense, though the implications of this word are unsavoury to you. It is consensual, after all, and you have told him he is free to possess you whenever he wishes. Every day he grows smaller, fainter, and this concerns you until he explains. He is sinking deeper into you. Always deeper.
He helps you write your thesis. He writes how it feels to take hold of your body in this way, though you are aware on some diminished level, for the two of you share feelings completely. His thoughts, your thoughts...all blurs together into pretty red mist. If you are sad, when you see the faces your classmates make when you do your mid-term presentation, or when your tutor insists you look ill, or when you watch a film together about happy people, or when you see a baby bird motionless on the floor of the woods the two of you walk through sometimes, Crimsona steps in and takes the reigns. He is like a balm, eliminating the need for sorrow or even the thoughts which lead to sorrow. Once your thesis is complete, he whispers a wonderful idea for the two of you. A finale, of sorts. A way to make them all understand. That is, if you wish to give the final quarter presentation...