Nitroplus Blasterz: Heroines Infinite Duel is becoming an increasingly popular game for combo videos. Its double assist mechanics and loose inputs allow for similar combo flexibility to Ultimate Marvel vs. Capcom 3 and Skullgirls 2nd Encore; if you add the amount of synergy that each character has with multiple assists, it makes this game magical for combos.
In this video, Ignis from the visual novel game Jingai Makyou steps up to slice and dice through foes. She has some powerful combos, including several super combos and cancels that extend the pain for quite a while.
Source: Mikadok