You planned on letting yourself get taken away from One For All and be transferred to Tomura Shigaraki, to give him the difficulty of using your quirk and the difficulty of moving since your quirk had so much of an effect on Izuku. If it gave Izuku a struggle in moving, it most definitely would affect Tomura trying to move around during the battle and it would give everyone a bigger chance of winning this war.

You had been planning this for a long time. You poisoned yourself(Kinda based on Shinobu.) Just to kill All For One a long time ago in case he did plan on taking your quirk. Your quirk, your quirk would have to be transferred by DNA as well. And your blood would be the source he'd need to get it if you were bleeding out.

As you stood there calmly. Someone grabbed your shoulder roughly, causing you to tumble a bit to see who it was and turn around, but you were met with red eyes staring down at you. Kudo. Kudo's red eyes burned down into your own, as he grabbed your collar harshly. Kudo had liked you for a long time but never confessed. Kudo wasn't happy about the plan. Why would he? He's loved you for years.

"What kind of plan is this?!"

Kudo yelled, his voice harsh, and full of anger, but there was a hint of pain in it and desperation. Kudo wanted to know why you were doing this to yourself. Why were you planning to get yourself killed just to help everyone win by taking your own life. He didn't want to let you go. He wasn't ready.