Happy Hotaru-sou

Main character does not have self-confidence, because he always used to be defeated by his self-proclaimed rival Naruto since childhood. Now hero gets a job of apartment complex administrator by parents recommendation, but it somehow gets known to Naruto who also claims to be this complex administrator. Employer establishes a month test period to choose among two candidates. Will protagonist yield his pride and all the beautiful girls of the complex to his bitter offender?