Words Bubble Up Like Soda Pop, Vol. 2 (manga) — Imo Oono

As Mr. Fujiyama recuperates, Cherry and Smile decide to hunt down the record he holds so dear. They ask around the mall, examining Mr. Fujiyama's empty album jacket for clues -- but the breakthrough arrives when they identify the radio tower shown on its back side. Desperate for answers, the two make for the tower to see what secrets it holds!