MIL(F)TANK (Pixiv Fanbox)

念願のモンスターをゲットした彼は、「友人の家に泊まりに行く」と家を出て、

コンビニで飲み物と軽食を買った後、あらかじめ鍵を開けておいた学校の体育用具室へ向かった。

After getting the monster he had longed for, he left the house saying, "I'm going to stay at a friend's house," bought drinks and light meals at a convenience store, and then headed to the school's gym equipment room, which had been unlocked in advance.