[Please, he's not racist? He's equal opportunity murder?

Anyway. He just casually steps over his dead subordinate.]

Oh, them? They were distracting you, and I wanted to be the only one in your heart. [He pauses, before he looks up, as if thinking.] Hmmm... wait, I guess I should've asked first about your plans for the future before I had them killed, in case you were going to say you'd ditch them. Whoops! I just got impatient. Well, mistakes happen, right?

[Then, he turns to smile at them, holding out the bouquet of flowers he's still holding like he truly expects Ichinose to just accept them now. (He does. Why wouldn't she??)]

You see, what you said back in the lab really got to me! I don't have to kill myself over something that's just in my nature! It's normal to do what makes you happy, isn't it? To fall your heart's desire?

I spent my life doing what others wanted. [A hint of bitterness leaks into his voice.] I went along with everything the Director said, even when I hated it, because I didn't want him to be disappointed—and look at where that got everyone?

[He's back to all smiles. You can practically see the flowers radiating off of him.]

So, that's going to be my life's philosophy from now on! I'm going to do what makes me happy, and what makes me happy is following my love.

[Ichinose changed his life! And Yamato was there while it happened, ig.]