Manga by author Mamita - Status ongoing

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...!?

"I'd be down to sleep with you."These past 10 years I haven't dated anyone and given up on love. Now it's three months until my 40th birthday.Have a takoyaki party, eat a parfait, spend my birthday with a lover.The handsome member of my team who's 10 years younger than me just had to find my secret list and now we're going to check it off together?Making the list changed my life?! A love story between a handsome subordinate x his older superior.+