2boys beach blue_eyes blue_sky brothers brown_hair child feet_out_of_frame freckles genshin_impact highres holding holding_innertube innertube lens_flare looking_at_viewer male_child male_focus multiple_boys navel ocean open_mouth outdoors red_swim_trunks shorts siblings signature sky smile summer surfboard tartaglia_(genshin_impact) teucer_(genshin_impact) tnoqina