If you plan to visit at sunset, choose a time between 16:00 and 17:00 and book as early as possible- it's a very popular slot. (We didn't manage to book it in time and ended up going in the evening, but honestly, we didn't regret it it was very atmospheric)
Location
Japan, 〒150-6145 Tokyo, Shibuya, 2-chōme−24−12 14階・45階・46階・屋上
Tickets can be purchased on-site at the ticket counter or online. When we arrived, we saw a huge line. I immediately started looking for an online option and ended up buying them through this website Kkday.com. With e-tickets, you go to a separate counter and enter directly no need to wait in the long queue