For those who find the story confusing because of lack of character introductions and why Nanami needed a punishment: the author drew the first 2 volumes of the ‘Doujin’ serie before this, it is all explained there.
The author drew the 2 overlapping series in this order, which is probably the reading order that would make the most sense (so there is more of our couples 😃 ):
1 doujin ni koishite [Ichito x Yoshifumi] [Extra: Watanabe x Ozaki]
2 doujin ni yumemite [Ichito x Yoshifumi] [Extra: Watanabe x Ozaki]
3 gouin sakka to makeinu no hatsukoi [Kase x Nanami] [Extra: Watanabe x Ozaki]
4 doujin de kajite [Ichito x Yoshifumi] [Extra: Watanabe x Ozaki]
5 gouin sakka to hinadori no katakoi [Kase x Nanami] [Extras: Watanabe x Ozaki & Ichito x Yoshifumi]
6 doujin ni urunde [Ichito x Yoshifumi] [Extra: Watanabe x Ozaki]
7 gouin sakka to koi neko no tomadoi [Kase x Nanami]
