Ok bare with me here... Its 9.5/10.
Reasoning:
Art: Average - 7/10
Story: Unoriginal but sweet like candy - 8/10
Plot: Slow AF but not cringe - 7/10
Romance: Very Very Vanilla and No NTR or Harem so that makes it 99.9/10 even if its not realistic or original. Got obesity from the sweetness.