Help! I Reborn as My Wife's Best Friend

[Gender Swap] [Genderbender romance] Lin An is reborn, back in his college days. It should have been the beginning of a chance to make up for every regret in his life, but he discovers that he's become the woman he hated most: Xia Lin, his wife Lu Jiayi's best friend, who spends her days drinking at parties and has a wild private life. Looking at that devastatingly beautiful face in the mirror, and at the young, radiant "wife" beside him, who has no suspicions at all, Lin An is overcome with grief and indignation. In his previous life, he guarded against Xia Lin like a thief, afraid she'd corrupt his pure little cabbage. Now, he can only take matters into his own hands, assume Xia Lin's identity, and protect his wife from danger and from her best friend... Wait, this best friend is me?! To keep his future wife from being snatched away by all manner of lecherous admirers, Lin An is forced into a ridiculous best-friend routine: fending off his wife's suitors, supervising her studies, and turning down invitations to anything "indecent." He does his best to play the part of a devoted guardian, intent only on safely "handing" his wife over to his past self. But... as he fends off countless admirers on his wife's behalf, he also finds himself relentlessly pursued by a famous figure known across the entire school. Lin An is completely flustered. "Hey! Get your targets straight. You're supposed to be after her, not me!"