Sonic the Hedgehog: Lyrical Familiar

Almost having your home destroyed can really stress you out. A (almost) 9 year old Sonic knows that well, and has decided to take a vacation. Little does he know that his path is about to cross with a 9 year old Nanoha Takamachi, who is looking for her own place in life. Their destinies linked one faithful night. (Genesis Sonic timeline; Original Series/MOVIE the 1ST Nanoha)