Diluc has gone on a night walk next to kaeya, leaves him waiting for him among the vineyards and when he returned gives him a Small Lamp Grass, he just wants to see his cute face lit up, and is in love with that bright eye...
Yes, I'm a cheesy :p
ahhhhh I am so in love with diluc smiling, in my headcanon diluc was always the one who was encouraged to tour the vineyard and dragged kaeya with him, More fluffy shit because I'm romantic today(?