the ambrosia plant (i tried to draw here) represents mutual love
Imagine the boys playing catch but with telekinesis. They throw random crap at each other to but always keep it kind of light so that ritsu can play, but one time shou over does it and throws a car. Ritsu manages to catch it and he's super excited like "nii san! Nii san look i caught it! " "that's great ritsu! We'll be right back" shigeo says dragging shou away to have a 'talk'