Rangeman

Ootsuka Renji has no success at love.
With 99 straight strike outs at the age of 16, he meets a new girl just as he cries as he deletes the contact information from his last one.

From NoName-Scan:
Da-Zhong Lian-Er is a high school student who has been looking for love for a long time. Unfortunately, none of the 100 girls he confessed to so far have returned his feelings. Each of them also unintentionally left him with tears. Meanwhile his schoolmates are more interested about a young star in the magazines, to who which Lian-Er surprisingly didn't pay any attention to whatsoever. Who will be the girl for him, if he ever finds someone?