Kimi ni Todoke, Sasameki Koto Recommendations
Both series are relatively slow paced high school love stories. The plot of both shows revolve around two friends coming to develop feelings for the other.
The main characters also share some similarity in their desire to be cute or girly, rather than the appearance they give off. Kimi ni Todoke's Sawako being creepy and unapproachable, while Sasameki Koto's Sumika is cool and masculine.