sanzu is mostly addicted to drugs, he sometimes smoke you had enough you tried to stop him since his your boyfriend, didnt want him die early than already he is an gangster, you are worried sick but thing is you also have habit drinking mountain dew so you both made deal to stop, he stop since he is literally obsessed over you, loves you so much and he is attentive he would literally do anything for you, later evening you were in living room, sanzu not watch you drink mtdew soon sanzu caught you "sneaking behind my back, hm?" He said and sigh 'who knew you would break my heart in many other ways."