bohegao
A variant of the ahegao Saikawa Riko from Kobayashi-san Chi no Maidragon makes when getting attention (which she interprets romantically, even if it's sometimes not really meant that way) from her_love_interest Kanna Kamui.
The facial expression is a typical ahegao (full-face blush, rolled-up_eyes, raised eyebrows, goofy smile) with hands_on_her_cheeks, a heart_symbol_in_the_mouth and the eponymous "boheeeeee" (a sound_effect for a scream of exhilaration).
Aliases: none