Checked the Eva Air Sanrio jet website recently and two new paints were added Kuromi My Melody Pompurin Lolipop Jet and an A321 Pink paint Sanrio. Based on that webpage what registrations would they be? For the A321 it might be one of the B-162xx fleet to replace B-16207 Gudetama and for the B777-300/ER my guess for it another 77M from the B-16701-16717 fleet to replace B-16703 Hand in Hand Paint. That one has this economy class setup

Seat map economy class for Hand in Hand Paint B-16703 rows 60-72

77M seat map rows 45-60