makuru_(tonari_no_seki-kun_junior)
The young son of Yokoi Rumi from Tonari no Seki-kun Junior. His father is implied but not confirmed to be Seki Toshinari from the previous manga.
The young son of Yokoi Rumi from Tonari no Seki-kun Junior. His father is implied but not confirmed to be Seki Toshinari from the previous manga.