Yukika is on her way to visit Ichirou, her younger step-brother. She’s torn between her feelings of wanting to behave like a proper older sister to him, but also enjoying the sexual relationship they share.
Utaha captures Tomoya, takes him to a hotel, and feeds him a suspicious substance; in order to leave him with a lasting memory of her.
I don’t know much about Saekano, as I haven’t watched the anime nor read the manga/light novels. However, if Utaha is accurately portrayed in this doujinshi, I would probably like her. Proactive heroines are nice.