I Opened My Eyes at the Apple Stand Again, and This Time I Chose to Marry Into the Reinhardt Family

Any Books About Reinhard or Miss Natsumi?

Looking for something similar to Re:Zero: Starting with Saving Genderbent Natsuki Subaru. An IF route, a ship, no CP, an original protagonist, Subaru as the protagonist, or Subaru as a major supporting character are all fine. Something with Miss Natsumi or genderbent Natsuki Subaru, too.