This episode starts by continuing the relationship between Hitomi and Yuito as well as Hitomi’s eventual departure.
Out of all Hitomi’s desperation and depression, she at least has Yuito as her source of happiness. However, that source of happiness is going to disappear very soon so she’s frustrated by that fact. She thinks it’s better to not have met Yuito so she won’t have any of these confusing feelings. However, Yuito manages to convince her otherwise and thus indirectly making her take a step forward in facing the harsh truth of having to leave him and her friends. That step forward is well, to have the most fun with everyone, particularly with Yuito while she can. She’s basically facing her problem directly again instead of running away. She realizes that it’s no use wandering in the dark all the time. Her friends are always helping her so that’s the least she can do.