Sweet, straightforward Vanilla and I like it.
"Studying"...Not to mention he even says that's rare for her. I wonder if she wants something else, hmm...?
Peer Pressure sometimes causes teenagers to do things they would not do otherwise ... it may have always been so, and it may probably always be so. Case in point: Yuuki's sending "proof" of her having had sex to her friends ... at least Daiki showed no inclination to do likewise.
Another one by Yamada-sensei, which I added to my Favorites first before reading ... and once more, I didn't need to change my decision afterwards.