On multiple harmonic sums: 1. divisibility of Bernoulli numbers, 2. the MSW formula, Ikomayama Mtah Seminar, November 11, 2024 (talk: Engilish)

Constellation theorems for norm forms, Second International Workshop in Analytic Number Theory, Seoul National University, August 22, 2023 (talk: English)

On the extension of the Green-Tao theorem to number fields, Virtual Discrete Math Colloquium, Zoom, April 19, 2023 (talk: English)

The graph removal lemma, iTHEMS Math Seminar , Zoom, November 19, 2021 (talk: English)

On a generalization of the Green-Tao theorem to number fields, Darf seminar, Zoom, July 17, 2021 (talk: Japanese, slide: English)

Green-Tao's theorem and recent progress, The 14th Young Mathematicians Conference of Zeta Functions, Zoom, Feb. 21, 2021 (talk: Japanese, slide: English)