I don't think it would be a good idea to suddenly put nsfw tho, this cute wholesome kisses are perfect for them, maybe a nsfw manga apart would be good after the manga finishes
A sex scene is not necessarily hyper-NSFW and beyond that does not ruin the beauty and purity of the relationship that was portrayed in the manga. Yagate Kimi ni Naru is the perfect exemple for that. Sex can be wholesome.
Yeah, like you said, in Yagate Kimi Ni Naru the sex scene is perfect because of the setting and after all that angst it was just a beautiful scene to end the manga, but here they just had the first kiss and i feel like this is rushing things. So i meant that after everything figured out and as they mature it would be a good scene to have but not just right now