A woman that is the personification of some sort of drink or medication uses bottles of her product to throw down a fishing line that hooks and reels in high school girls to turn them into sex toys.
Rather, to explain it better, it's the personification of a Onahole, namely of the 'Tenga' brand, down to it's common Red/White stripe design, and is given the name 'Henga' as a result. So, it's a living onahole, using onaholes, to TF girls into onaholes.