The most important issue for Internet-Only Bank is ``real name identification`` and ``limit ownership of bank by manufacturing companies``. While ``Non face-to-face real name identification`` issue was concluded as the government has altered the authoritative interpretation, ``limit ownership of bank by manufacturing companies`` issue requires more complicated solution. Transaction restriction of major shareholders, minimum capital level, scope of business, prudential regulations, examination standard for authorization are important issues for the introduction of Internet-Only Bank as well. It is desirable that same regulations should be applied to traditional banks and Internet-Only Bank, but in some fields, alternation of regulations for Internet- Only Bank is required as Internet-Only Bank has distinct characteristics. Moreover, stricter rules are required in terms of bank ownership structure, transaction of major shareholders, transparency of authorization process and liquidity crisis countermeasures. The market share of Japanese Internet-Only Bank in Japanese deposit market is still just around 1.61%. The impact of the introduction of Internet- Only Bank on domestic financial institution``s competitive composition would be insignificant. However, as Internet-Only Banks have price competitiveness, extension of influence on deposit and remittance market, intensifying competition with non-bank financial companies, expansion of fin-tech function regarding banking business, and improvement on online-channel are expected to be achieved in the near future. Therefore, the government should improve the efficiency of competition as new entrant is allowed into the banking business, and continuous improvement of regulations is also required to increase the benefit of financial consumers.