The tendency toward binge watching Thai Boys Love (BL) series among students may generate psychological and academic consequences when left unaddressed. This study aimed to describe the pattern, contributing factors, and impact of binge watching tendency, and to examine the effectiveness of individual counseling based on Acceptance and Commitment Therapy (ACT) using the metaphor technique in reducing this tendency among eleventh-grade students at a vocational high school in Tegal City. A mixed-methods approach with a sequential exploratory design was employed, beginning with qualitative exploration through interviews, observation, and documentation, followed by quantitative measurement using a Likert-type binge watching tendency scale whose validity and reliability had been established (Cronbach's Alpha = 0.971). Five students identified as exhibiting binge watching tendencies were selected through purposive sampling. Quantitative data were analyzed using the Wilcoxon Signed Rank Test. Findings indicate that the subjects' binge watching tendency emerged from an interaction of psychological, social, and technological factors, producing both relaxation benefits and adverse effects such as disrupted sleep patterns and reduced learning concentration. The mean score decreased from 77.6 at pre-test to 66.8 at post-test, and the Wilcoxon test yielded Z = -2.023 with a significance level of 0.043 (p < 0.05). These findings demonstrate that ACT-based individual counseling using the metaphor technique effectively and meaningfully reduced students' binge watching tendency. ABSTRAK Kecenderungan binge watching series Thailand Boys Love (BL) pada peserta didik berpotensi menimbulkan dampak psikologis dan akademik apabila tidak segera ditangani. Penelitian ini bertujuan mendeskripsikan gambaran, faktor, dan dampak kecenderungan binge watching, serta menguji efektivitas layanan konseling individu berbasis Acceptance and Commitment Therapy (ACT) dengan teknik metafora dalam mereduksi kecenderungan tersebut pada peserta didik kelas XI di salah satu SMK Negeri di Kota Tegal. Penelitian menggunakan pendekatan mixed methods dengan desain sequential exploratory, diawali eksplorasi kualitatif melalui wawancara, observasi, dan dokumentasi, kemudian dilanjutkan pengukuran kuantitatif menggunakan skala kecenderungan binge watching model Likert yang telah diuji validitas dan reliabilitasnya (Cronbach's Alpha = 0,971). Subjek penelitian ditentukan melalui teknik purposive sampling dan berjumlah lima peserta didik yang menunjukkan indikasi kecenderungan binge watching. Data kuantitatif dianalisis menggunakan uji Wilcoxon Signed Rank Test. Hasil penelitian menunjukkan bahwa kecenderungan binge watching pada subjek terbentuk dari interaksi faktor psikologis, sosial, dan kemudahan akses teknologi, dengan dampak ganda berupa relaksasi di satu sisi serta gangguan pola tidur dan penurunan konsentrasi belajar di sisi lain. Skor rata-rata kecenderungan binge watching menurun dari 77,6 pada pre-test menjadi 66,8 pada post-test, dan hasil uji Wilcoxon menunjukkan nilai Z sebesar -2,023 dengan signifikansi 0,043 (p < 0,05). Temuan ini membuktikan bahwa layanan konseling individu berbasis ACT dengan teknik metafora efektif menurunkan kecenderungan binge watching peserta didik secara bermakna.