Remorsefully isolated; she remains oblivious to the extent of the betrayal until the episode's end.
For more details on the series' progression, you can visit the School Days Wiki or read episode discussions on r/anime . School Days Episode 6
: Despite continuing the relationship, Sekai feels growing guilt and urges Makoto to confess the truth to Kotonoha. Remorsefully isolated; she remains oblivious to the extent
Pressures Sekai into continuing their secret relationship while actively avoiding Kotonoha. School Days Episode 6