The second cour starts airing January 2nd. The new PV is here. Check out the ANN article for additional information. Synopsis from AniList:

Do these sports-crossed lovers have a chance?

Taiki Inomata loves badminton, but he has a long way to go before he can reach nationals. When Taiki sees upperclassman Chinatsu Kano practicing her heart out on the girls’ basketball team, he falls for her hard. After an unexpected turn of events brings the two closer together, sports might not be the first thing on their minds anymore!