本編の主人公。 祖父の遺した家で一人暮らしをしながら、大学へ通っている。 三乃瀬家宛ての届け間違い小包をうっかり受け取ってしまったがために、三姉妹の秘密を知ることになる。 「誰がエロゲの主人公だ、誰が！」
'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M5.5%208%20H25.5%20Q31%208%2031%2013.5%20V61.5%20Q31%2063%2032.4%2062.42%20L75.6%2044.58%20Q77%2044%2077%2042.5%20V13.5%20Q77%208%2082.5%208%20H102.5%20Q108%208%20108%2013.5%20V118.5%20Q108%20124%20102.5%20124%20H82.5%20Q77%20124%2077%20118.5%20V68.5%20Q77%2067%2075.6%2067.58%20L32.4%2085.42%20Q31%2086%2031%2087.5%20V118.5%20Q31%20124%2025.5%20124%20H5.5%20Q0%20124%200%20118.5%20V13.5%20Q0%208%205.5%208%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-i-1'%20transform='translate(120%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M5.5%2025%20H25.5%20Q31%2025%2031%2030.5%20V118.5%20Q31%20124%2025.5%20124%20H5.5%20Q0%20124%200%20118.5%20V30.5%20Q0%2025%205.5%2025%20Z'%20/%3e%3cpath%20fill-rule='evenodd'%20d='M31%202.5%20C31%2011.0604%2024.0604%2018%2015.5%2018%20C6.9396%2018%200%2011.0604%200%202.5%20C0%20-6.0604%206.9396%20-13%2015.5%20-13%20C24.0604%20-13%2031%20-6.0604%2031%202.5%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-k'%20transform='translate(162%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M5.5%208%20H25.5%20Q31%208%2031%2013.5%20V62.5%20Q31%2064%2031.9%2062.8%20L58%2029%20Q61%2026%2066%2026%20H86.5%20Q93%2026%2090%2030%20L58%2068.8%20Q57%2070%2058%2071.3%20L93%20118.5%20Q96%20124%2090%20124%20H66%20Q62%20124%2060%20121%20L32%2087.2%20Q31%2086%2031%2087.5%20V118.5%20Q31%20124%2025.5%20124%20H5.5%20Q0%20124%200%20118.5%20V13.5%20Q0%208%205.5%208%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-a-1'%20transform='translate(257%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M10%2029%20C27%2022%2048%2021%2062%2025%20C81%2030%2089%2044%2089%2066%20V112.5%20Q89%20117.9%2083.5%20120%20C73%20124%2056%20127%2042%20127%20C15%20127%200%20116%200%2097%20C0%2073%2018%2060%2055%2060%20H57%20Q60%2060%2060%2057%20C60%2048%2051%2044%2042%2044%20C32%2044%2023%2047%2017.5%2049.2%20Q12%2052%2010%2046.5%20L6.5%2036.5%20Q4%2031%2010%2029%20Z%20M59%2083%20C59%2079%2056%2077%2052%2077%20C39%2077%2029%2083%2029%2095%20C29%20104%2034%20108%2043%20108%20C53%20108%2059%20104%2059%2099%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-r'%20transform='translate(352%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M5.5%20124%20Q0%20124%200%20118.5%20V67%20C0%2038%2021%2023%2045%2023%20Q50.5%2023%2050.5%2028.5%20V40.5%20Q50.5%2046%2045%2046%20C34%2046%2030.5%2054%2030.5%2067%20V118.5%20Q30.5%20124%2025%20124%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-i-accent'%20transform='translate(413%200)'%20fill='%23F59E0B'%3e%3cpath%20fill-rule='evenodd'%20d='M5%2027.68%20L24.5%2021.48%20Q31%2019.4%2031%2026.5%20V118.5%20Q31%20124%2025.5%20124%20H5.5%20Q0%20124%200%20118.5%20V35.5%20Q0%2029.3%205%2027.68%20Z'%20/%3e%3cpath%20fill-rule='evenodd'%20d='M1%20-3.32%20C6%20-4.9%2010%20-4.9%2013.8%20-3.75%20Q15.5%20-3.1%2017.2%20-4.9%20C21%20-9%2024.3%20-10.7%2028.5%20-12.03%20Q35%20-14.6%2035%20-7.5%20V3.5%20Q35%208.1%2030.5%209.47%20C25%2011.21%2021.5%2013.2%2017%2016%20Q15.5%2016.9%2013.8%2016.4%20C9.8%2016.35%206.5%2017.06%202.5%2018.33%20Q-4%2020.9%20-4%2013.5%20V4.5%20Q-4%20-1.7%201%20-3.32%20Z'%20id='shiori-dot'%20/%3e%3c/g%3e%3cg%20id='letter-n'%20transform='translate(453%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M0%2038.5%20Q0%2033%206%2030.62%20C18%2026%2035%2023%2046%2023%20C73%2023%2088.5%2038%2088.5%2064%20V118.5%20Q88.5%20124%2083%20124%20H63.5%20Q58%20124%2058%20118.5%20V61%20C58%2049%2054%2046%2044.5%2046%20C36%2046%2030.5%2049%2030.5%2053%20V118.5%20Q30.5%20124%2025%20124%20H5.5%20Q0%20124%200%20118.5%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-a-2'%20transform='translate(547%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M10%2029%20C27%2022%2048%2021%2062%2025%20C81%2030%2089%2044%2089%2066%20V112.5%20Q89%20117.9%2083.5%20120%20C73%20124%2056%20127%2042%20127%20C15%20127%200%20116%200%2097%20C0%2073%2018%2060%2055%2060%20H57%20Q60%2060%2060%2057%20C60%2048%2051%2044%2042%2044%20C32%2044%2023%2047%2017.5%2049.2%20Q12%2052%2010%2046.5%20L6.5%2036.5%20Q4%2031%2010%2029%20Z%20M59%2083%20C59%2079%2056%2077%2052%2077%20C39%2077%2029%2083%2029%2095%20C29%20104%2034%20108%2043%20108%20C53%20108%2059%20104%2059%2099%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-g'%20transform='translate(642%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M47%2025%20C61%2025%2074%2028%2082%2033%20Q86%2035%2086%2039%20V115%20C86%20139%2072%20153%2047%20153%20C36%20153%2028%20151.5%2020%20149%20Q16%20147.5%2017.5%20143%20L20%20136%20Q21.5%20131%2026%20133%20C33%20136%2040%20137%2047%20134%20C54%20131%2057%20126%2057%20114%20V113%20C51%20117%2044%20119%2035%20119%20C13%20119%200%20102%200%2077%20C0%2047%2017%2025%2047%2025%20Z%20M56%2053%20C56%2047%2051%2044%2046%2044%20C34%2044%2029.5%2056%2029.5%2075%20C29.5%2093%2032.5%20103%2043%20103%20C51%20103%2056%2098%2056%2091%20Z'%20/%3e%3c/g%3e%3cg%20id='letter-i-3'%20transform='translate(737%200)'%20fill='%2339C5BB'%3e%3cpath%20fill-rule='evenodd'%20d='M5.5%2025%20H25.5%20Q31%2025%2031%2030.5%20V118.5%20Q31%20124%2025.5%20124%20H5.5%20Q0%20124%200%20118.5%20V30.5%20Q0%2025%205.5%2025%20Z'%20/%3e%3cpath%20fill-rule='evenodd'%20d='M31%202.5%20C31%2011.0604%2024.0604%2018%2015.5%2018%20C6.9396%2018%200%2011.0604%200%202.5%20C0%20-6.0604%206.9396%20-13%2015.5%20-13%20C24.0604%20-13%2031%20-6.0604%2031%202.5%20Z'%20/%3e%3c/g%3e%3c/svg%3e)