Need help trying to find 3 mangas, well two of them are webtoons and the later two I don't recall too well. The first one is a webtoon from naver and I think it was a passion project from the author but ultimately gave up on it thus was cancelled. I can't remember the plot too well but i do remember one of the characters was a female vampire child; and the MC saw a glimpse of her adult form at some point, I think it was during a car crash on a trip. the vampire had purplish silver hair. I think The plot started off with the MC running late for work and either almost getting or got into an accident while crossing the street. In the last chapter, I recall that the MC was going to a female coworker's (iirc) house was imaging how luxurious it might be only to find that the house was basically Dracula's castle.
The other was one is also a naver webtoon that has a similar premise to my hero academia iirc but the MC seemed unmotivated or uninterested in his power. I recall the MC has gray hair with glasses and a brown coat and I think he was accompanied by a little girl who was dressed mostly in pink.
Last one i don't much about the plot. All i remember that caught my interest was that the MC found what looks like a debit card that fell from the sky in the middle of Tokyo.