Manga by author Mamita

This is the sequel of "Natsume-san wa Hirakaretai": https://battwo.com/title/136870-natsume-san-wa-hirakaretaiNatsume-san wa Hokorobitai/ Natsume-san wants to bloomThanks to his boyfriend Kou-kun, Natsume-san has been able to overcome his fear of s**. As he realizes how cool Kou-kun is, Natsume-san decides to create an agenda again in order to become worthy of his boyfriend. Meanwhile, his childhood friend Kurumi returns to Japan...!?