This manga can give you very mixed feelings. The thing which I really liked is that Akira (the MC) didn't embrace her awkward behavior. He still maintained a criticizing approach. In addition, he wasn't feeble, he didn't seek to run away though he was alerted by the way she showed her love to him. He tried to mentor her, coach her and finally ... I won't spoil the ending for you but I am glad that the mangaka cast a yandere character who could still find acceptance from the guy she gave her affection to.
Koharu No Hibi