It's too big, and I can only put the tip (of his thing) in it! ~ ~ Height Difference 43 cm Drowning ~ ~ (2) / Fujiwara Ena Mitsukoi Tiara series Bunkasha comics
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Japanese title: B6コミック 大きすぎて、(彼のアレが)先っちょしか入りません!~身長差43cmの溺愛~(2) / 藤原江奈 蜜恋ティアラシリーズぶんか社コミックス