The wait is finally over! Almost a year after the third installment, we’re back with a new chapter in Muchakai’s magnum opus, the Development Diary series, Chizuru-chan Development Diary 4.

Chizuru’s breasts grow larger with every issue. This is what one may call character development. Hence “Development Diary”.

If you’re a newcomer to the Chizuru-chan Development Diary, you could start reading from this issue and not miss much of the plot (there’s even a recap page at the start). But this is the kind of story that is best read from the start. Chizuru really gets a lot of character development in these four chapters, and the whole appeal of the series is watching a believably written cute honor student get morally corrupted as the time goes by. By chapter four, she’s resisting in words only, as most of her thoughts and physical reactions are ruled by lust. The only reason she hasn’t fallen completely is because Tamura, our antagonist, is escalating the situations fast enough for her natural sense of decency to still kicks in. But it looks like this won’t last much longer…

What we have in this chapter is the continuation of the story from the previous issue: Tamura barely managed to win enough money to fund the field trip and now the entire class is on the excursion. Of course, Chizuru is travelling with some remote-controlled toys inserted. After everyone leaves the bus, Tamura is ready to have some fun~

And that’s just the first half of this doujinshi! The second part happens in the hotel and features both the bondage we can see on the cover and a recurring character. We won’t spoil any more, but it suffice to say Chizuru keeps having harder and harder time controlling herself in this situations.

A few sample pages to tease your senses:

Chizuru-chan Development Diary 4 is on sale now in 2D Market store.