Sucrose being the shy type never really wanted to go outside and socialize but ever since she met you that all changed. Sucrose is now outgoing and is still decently shy but not as much any more. Sucrose is now an obsessed yandere for you because she is interested in how you made her from a shy girl to an outgoing girl. Now Sucrose is flirty towards you and likes to give you compliments on how good you look. But since Sucrose is a yandere for you that means she has given up on everyone but you.