He won't even let his guard down enough to get a kiss from her for another hundred and fifty chapters. The manga timeline vs. the LN/WN is like watching Fifty Shades dumbed down for a nine-year-old to handle.
Never have I rooted harder for an isekai couple to get together, they're actually so damn sweet. I'm gonna jinx it with this, but I love that there've been no lucky pervert moments with her or anything, they're just really trusting of each other