Research and Development. Our research and development expenses decreased by 6.9% from ¥364,465 thousand in the six months ended October 31, 2021 to ¥339,283 thousand ($2,283 thousand) in the six months ended October 31, 2022, primarily due to variation of our overhead cost allocation standard and our selection and concentration of development products.
SG&A. Our SG&A increased by 78.4% from ¥360,962 thousand in the six months ended October 31, 2021 to ¥643,892 thousand ($4,332 thousand) in the six months ended October 31, 2022, primarily due to increases in professional service costs as we contracted with a law firm, an accounting adviser and our auditor in connection with preparations for this offering, as well as advertising expenses related to new products and compensation for consulting service.
Other Operating Expenses. Our other operating expenses decreased by 100.0% from ¥311 thousand in the six months ended October 31, 2021 to zero in the six months ended October 31, 2022, primarily due to the cessation of non-recurring items such as the disposal of property and equipment.
Interest Expense. Our interest expense increased by 15.1% from ¥11,662 thousand in the six months ended October 31, 2021 to ¥13,423 thousand ($90 thousand) in the six months ended October 31, 2022, primarily due to an increase in outstanding borrowings.
Other Income. Our other income decreased by 97.0% from ¥4,488 thousand in the six months ended October 31, 2021 to ¥133 thousand ($1 thousand) in the six months ended October 31, 2022, primarily due to an increase of a foreign exchange loss.
Liquidity and Capital Resources
Sources of Capital Resources
Our principal sources of liquidity were cash and cash equivalents totaling ¥1,795,963 thousand ($12,083 thousand) as of April 30, 2022 and ¥3,274,956 thousand ($22,034 thousand) as of October 31, 2022, which were held and used for working capital purposes. Our cash and cash equivalents are comprised of cash on hand, demand deposits, and time deposits maintained at various financial institutions. We believe our working capital is sufficient for the Company’s requirements for the next 12 months.
We have funded our operations primarily through equity and debt financings, and revenue from our commissioned research and development pursuant to contractual arrangements with third parties. In June and September 2022, we received ¥2,178,760 thousand ($14,658 thousand) in gross proceeds from our sale of 1,153,800 shares of Series C convertible preferred stock. Additionally, the Company has outstanding loans from two Japanese financial institutions: (i) The Shoko Chukin Bank, Ltd. and (ii) Resona Bank Limited. See “ — Credit Facilities” below for more information on these loans.
Our commissioned research and development pursuant to contractual arrangements with third parties and our collaboration arrangements aimed at developing, testing and validating our products and product candidates with collaboration partners are a substantial source of revenue for our business. While the revenue from commissioned research and development will remain as a source of capital for us, we expect to gain more revenue from commercializing and expanding sales of our own products and solution services.
Uses of Capital Resources
We have incurred significant operating losses and negative cash flows since our inception. We incurred net losses of ¥624,957 thousand, ¥885,000 thousand ($5,954 thousand), ¥759,484 thousand, and ¥1,109,468 thousand ($7,465 thousand) for the six months ended October 31, 2021 and 2022 and the years ended April 30, 2021 and 2022, respectively. As of October 31, 2022, we had an accumulated deficit of ¥3,301,761 thousand ($22,214 thousand). Our primary use of capital resources has been to conduct research and development activities, organize and staff our Company, develop our business plan, secure related intellectual property rights, and raise capital.
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