ACM SPLC2023 (Systems and Software Product Line Conference) Tokyo is over! Thank you for your participation and involvement. Prof. Washizaki have a chance to contribute to the conference as its Proceedings Chair. Proceedings are now in the ACM Digital Library.
Volume A: https://dl.acm.org/doi/proceedings/10.1145/3579027
Volume B: https://dl.acm.org/doi/proceedings/10.1145/3579028