They Weren't Like This in Their Previous Lives.

Gu Xiu was reborn in 2002. In his previous life, he fought for the country. In this life, he just wants to live a more relaxed life so that those who once cared about him will no longer have regrets. That's all... The protagonist is not brainless or a virgin, but he is not bloodthirsty or crooked. If you like a single heroine, you can leave it. If you like multiple heroines, you can come in and check it out. There are some foreshadowings, but book lovers who like to list several systems in one go can also give it up.