Honestly i was cool with Yotsuba being the pick at first because of their back story but towards the end, i got disappointed. He should have chosen Miku or Nino. I just think you see the romantic connection more with them and i dont see that with him and Yotsuba.
Also cant we at least get a kiss or romantic end. It just felt like a family ending only. Honestly the end was pretty anticlimactic