Nijisanji is doing a share buyback. Companies do share buybacks for many reasons, such as to return cash to shareholders, boost earnings per share, or because they believe their shares are undervalued. In Niji's case the share buyback could could be a strategy to boost their stock price or earnings per share in the short term, but this might deplete their cash reserves if they face financial difficulty in the future. If the shares are cancelled, they cannot be reissued on the market and are considered to have no financial value. This could increase the value of the remaining shares, but it also reduces the company’s flexibility to raise funds by reissuing shares in the future.