MTALL-095 Sister, can you teach me how to take off my bra? Non Shirahana

Synopsis

[How to unhook a bra hook in a cool way & A storm of erotic comedy AV with glimpses of nipples and sagging of virgin brother and busty sister] I got my first girlfriend as a virgin!I am a character with a lot of experience after entering university She doesn't know that I'm a virgin because I'm acting like a virgin. I'm happy when I meet my girlfriend, but I'm always nervous that she'll find out that I'm a virgin. I managed to get through my first kiss last week, but I was so nervous that I don't remember much...I've already agreed to a sleepover date next week, so I can't escape. I have to make sure that the lie that I have a lot of experience doesn't get exposed so as not to ruin my current character as a chara guy... How can I not get found out that I'm a virgin? That's right! If you can smartly take off your bra, people will think you have a lot of experience. !!That's right! Let's let my sister practice taking off her bra!