All of the girls briefly have a lesbian orgy with Chisa, causing her to pass out.
When she wakes up, they show her a video of what happened afterwards, showing that they all continued to have sex with her, the MC eventually joining in as well.
At the start of the chapter, Malida began to have sex with the MC, Irena and Lichere a lot more off-screen as her bloodlust for the upcoming battle also increased her arousal. (This is very inconsequential, so I didn’t tag for this part, I just wanted to mention it.)
After the battle, we are introduced to Liese, which upon finding out she’s basically a tomboy, we get these lines from Malida:
“Albert, a girl, who crossdressed as a guy, might be nice as well. I like girls, but women like Liese are my guilty pleasure. She gets me all riled up. I think it’d be nice to get a taste of her.”
Malida then drags Liese off to the bedroom where they have lesbian sex with each other several times off-screen, but we do hear them moaning.
Eventually, Irena and Lichere join them as well and there’s a short yuri foursome while the MC watches.
This is also the first time any of the girls kiss each other on-screen. It’s possible it has happened off-screen before, but it’s never mentioned.
After a while, the MC joins and remains involved for the rest of the scene