[They've fooled around with each other a few times now, so he's glad that he has this little bottle of lube. It makes it less embarrassing.

But also because they've already fooled around a few times now, Izuku's brain has been thinking about these things a hundred times over in high definition. And anyone should know how aggressive Izuku can be once he's set his mind to something he wants...]

I just... I want to be connected to you in every way that I can be, Kacchan.

[Surprisingly soft, even with the prospects of Izuku taking full charge.]

It's our first time. I don't want to do this wrong, either. Hurting you could be bad.

[He's already slathering some lube over his fingertips and the reaching out to gently stroke Katsuki with his hand.]