: Erika Amano takes a central role in this chapter by looking after Nagi while he is bedridden. This shift in dynamic shows her growing maturity and genuine concern for him outside of their "fiancé" arrangement [2].

The phrase you provided translates to

: Hiro Segawa's competitive yet affectionate relationship with Nagi is tested as she watches Erika care for him, adding another layer to the series' ongoing romantic rivalry [1].